diff --git a/CHANGELOG.md b/CHANGELOG.md
index 53861e483..8be471e84 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 ### Added
 
 ### Fixed
+* Fix exceptions in structure view when command parameters are missing
 * Fix default Docker image name when running Dockerized TeX Live without a project SDK
 
 ## [0.9.9-alpha.3] - 2024-11-12
diff --git a/src/nl/hannahsten/texifyidea/structure/latex/LatexParagraphPresentation.kt b/src/nl/hannahsten/texifyidea/structure/latex/LatexParagraphPresentation.kt
index e1cd110d3..9f9c584c2 100644
--- a/src/nl/hannahsten/texifyidea/structure/latex/LatexParagraphPresentation.kt
+++ b/src/nl/hannahsten/texifyidea/structure/latex/LatexParagraphPresentation.kt
@@ -21,7 +21,7 @@ class LatexParagraphPresentation(paragraphCommand: LatexCommands) : EditableHint
             this.paragraphName = ""
         }
         else {
-            this.paragraphName = paragraphCommand.getRequiredParameters()[0]
+            this.paragraphName = paragraphCommand.getRequiredParameters().firstOrNull() ?: "Unnamed paragraph"
         }
     }
 
diff --git a/src/nl/hannahsten/texifyidea/structure/latex/LatexPartPresentation.kt b/src/nl/hannahsten/texifyidea/structure/latex/LatexPartPresentation.kt
index 23d459139..a765f7b3a 100644
--- a/src/nl/hannahsten/texifyidea/structure/latex/LatexPartPresentation.kt
+++ b/src/nl/hannahsten/texifyidea/structure/latex/LatexPartPresentation.kt
@@ -17,7 +17,7 @@ class LatexPartPresentation(partCommand: LatexCommands) : EditableHintPresentati
             throw IllegalArgumentException("command is no \\part-command")
         }
 
-        this.partName = partCommand.getRequiredParameters()[0]
+        this.partName = partCommand.getRequiredParameters().firstOrNull() ?: "Unnamed part"
     }
 
     override fun getPresentableText() = partName
diff --git a/src/nl/hannahsten/texifyidea/structure/latex/LatexStructureViewElement.kt b/src/nl/hannahsten/texifyidea/structure/latex/LatexStructureViewElement.kt
index 1dc3b787f..1a56359d9 100644
--- a/src/nl/hannahsten/texifyidea/structure/latex/LatexStructureViewElement.kt
+++ b/src/nl/hannahsten/texifyidea/structure/latex/LatexStructureViewElement.kt
@@ -13,18 +13,18 @@ import com.intellij.psi.search.GlobalSearchScope
 import com.intellij.psi.util.PsiTreeUtil
 import nl.hannahsten.texifyidea.file.*
 import nl.hannahsten.texifyidea.index.LatexCommandsIndex
+import nl.hannahsten.texifyidea.lang.commands.LatexGenericRegularCommand
 import nl.hannahsten.texifyidea.psi.LatexCommands
 import nl.hannahsten.texifyidea.psi.LatexTypes
 import nl.hannahsten.texifyidea.settings.TexifySettings
 import nl.hannahsten.texifyidea.structure.bibtex.BibtexStructureViewElement
 import nl.hannahsten.texifyidea.structure.latex.SectionNumbering.DocumentClass
-import nl.hannahsten.texifyidea.util.parser.allCommands
 import nl.hannahsten.texifyidea.util.getIncludeCommands
-import nl.hannahsten.texifyidea.util.parser.getIncludedFiles
 import nl.hannahsten.texifyidea.util.labels.getLabelDefinitionCommands
 import nl.hannahsten.texifyidea.util.magic.CommandMagic
+import nl.hannahsten.texifyidea.util.parser.allCommands
+import nl.hannahsten.texifyidea.util.parser.getIncludedFiles
 import java.util.*
-import kotlin.collections.ArrayList
 
 /**
  * @author Hannah Schellekens
@@ -72,8 +72,8 @@ class LatexStructureViewElement(private val element: PsiElement) : StructureView
         // Get document class.
         val scope = GlobalSearchScope.fileScope(element as PsiFile)
         val docClass = LatexCommandsIndex.Util.getItems(element.getProject(), scope).asSequence()
-            .filter { cmd -> cmd.commandToken.text == "\\documentclass" && cmd.getRequiredParameters().isNotEmpty() }
-            .map { cmd -> cmd.getRequiredParameters()[0] }
+            .filter { cmd -> cmd.name == LatexGenericRegularCommand.DOCUMENTCLASS.commandWithSlash && cmd.getRequiredParameters().isNotEmpty() }
+            .mapNotNull { cmd -> cmd.getRequiredParameters().firstOrNull() }
             .firstOrNull() ?: "article"
 
         // Fetch all commands in the active file.
@@ -87,7 +87,7 @@ class LatexStructureViewElement(private val element: PsiElement) : StructureView
         // Add sectioning.
         val sections = ArrayDeque<LatexStructureViewCommandElement>()
         for (currentCmd in commands) {
-            val token = currentCmd.commandToken.text
+            val token = currentCmd.name
 
             // Update counter.
             if (token == "\\addtocounter" || token == "\\setcounter") {
diff --git a/src/nl/hannahsten/texifyidea/structure/latex/LatexSubParagraphPresentation.kt b/src/nl/hannahsten/texifyidea/structure/latex/LatexSubParagraphPresentation.kt
index 71abf3b69..1dec33498 100644
--- a/src/nl/hannahsten/texifyidea/structure/latex/LatexSubParagraphPresentation.kt
+++ b/src/nl/hannahsten/texifyidea/structure/latex/LatexSubParagraphPresentation.kt
@@ -13,11 +13,11 @@ class LatexSubParagraphPresentation(subParagraphCommand: LatexCommands) : Editab
     private var hint = ""
 
     init {
-        if (subParagraphCommand.commandToken.text != "\\subparagraph") {
+        if (subParagraphCommand.name != "\\subparagraph") {
             throw IllegalArgumentException("command is no \\subparagraph-command")
         }
 
-        this.subParagraphName = subParagraphCommand.getRequiredParameters()[0]
+        this.subParagraphName = subParagraphCommand.getRequiredParameters().firstOrNull() ?: "Unknown subparagraph"
     }
 
     override fun getPresentableText() = subParagraphName
diff --git a/src/nl/hannahsten/texifyidea/structure/latex/LatexSubSectionPresentation.kt b/src/nl/hannahsten/texifyidea/structure/latex/LatexSubSectionPresentation.kt
index 2e233d68c..d78628c96 100644
--- a/src/nl/hannahsten/texifyidea/structure/latex/LatexSubSectionPresentation.kt
+++ b/src/nl/hannahsten/texifyidea/structure/latex/LatexSubSectionPresentation.kt
@@ -17,7 +17,7 @@ class LatexSubSectionPresentation(sectionCommand: LatexCommands) : EditableHintP
             throw IllegalArgumentException("command is no \\subsection-command")
         }
 
-        this.subSectionName = sectionCommand.getRequiredParameters()[0]
+        this.subSectionName = sectionCommand.getRequiredParameters().firstOrNull() ?: "Unnamed subsection"
     }
 
     override fun getPresentableText() = subSectionName
diff --git a/src/nl/hannahsten/texifyidea/structure/latex/LatexSubSubSectionPresentation.kt b/src/nl/hannahsten/texifyidea/structure/latex/LatexSubSubSectionPresentation.kt
index e3539d798..64d647858 100644
--- a/src/nl/hannahsten/texifyidea/structure/latex/LatexSubSubSectionPresentation.kt
+++ b/src/nl/hannahsten/texifyidea/structure/latex/LatexSubSubSectionPresentation.kt
@@ -17,7 +17,7 @@ class LatexSubSubSectionPresentation(sectionCommand: LatexCommands) : EditableHi
             throw IllegalArgumentException("command is no \\subsubsection-command")
         }
 
-        this.subSubSectionName = sectionCommand.getRequiredParameters()[0]
+        this.subSubSectionName = sectionCommand.getRequiredParameters().firstOrNull() ?: "Unnamed subsubsection"
     }
 
     override fun getPresentableText() = subSubSectionName