diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 9ab284e0..c022dbba 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -8,7 +8,7 @@ on:
 
 env:
   # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
-  BUILD_TYPE: Debug
+  BUILD_TYPE: RelWithDebInfo
 
 jobs:
   testing-win:
diff --git a/GViewCore/src/View/DissasmViewer/tests_dissasmviewer.cpp b/GViewCore/src/View/DissasmViewer/tests_dissasmviewer.cpp
index bfa2f859..7da43f37 100644
--- a/GViewCore/src/View/DissasmViewer/tests_dissasmviewer.cpp
+++ b/GViewCore/src/View/DissasmViewer/tests_dissasmviewer.cpp
@@ -306,7 +306,8 @@ class DissasmTestInstance
     DissasmTestInstance(const unsigned char* binaryData, size_t binaryDataSize)
     {
         instance = nullptr;
-        assert(init(binaryData, binaryDataSize));
+        const bool initResult = init(binaryData, binaryDataSize);
+        assert(init_result);
     }
 
     bool init(const unsigned char* binaryData, size_t binaryDataSize)
@@ -345,7 +346,8 @@ class DissasmTestInstance
         initData.visibleRows                  = 53;
         initData.obj                          = obj;
 
-        assert(zone->InitZone(initData));
+        const bool initZoneResult = zone->InitZone(initData);
+        assert(initZoneResult);
     }
 
     bool CheckInternalTypes(uint32 zoneIndex, std::initializer_list<ZoneCheckData> zones)
diff --git a/GViewCore/src/View/DissasmViewer/x86_x64/DissasmX86.cpp b/GViewCore/src/View/DissasmViewer/x86_x64/DissasmX86.cpp
index 43ea14cf..9c7a463d 100644
--- a/GViewCore/src/View/DissasmViewer/x86_x64/DissasmX86.cpp
+++ b/GViewCore/src/View/DissasmViewer/x86_x64/DissasmX86.cpp
@@ -819,7 +819,8 @@ bool Instance::DrawDissasmX86AndX64CodeZone(DrawLineInfo& dli, DissasmCodeZone*
     }
     DissasmAddColorsToInstruction(*asmCacheLine, chars, config, ColorMan.Colors, asmData, codePage, zone->cachedCodeOffsets[0].offset);
     std::string comment;
-    assert(asmCacheLine->parent);
+    if (!asmCacheLine->parent)
+        return false;
     if (asmCacheLine->parent && !asmCacheLine->parent->isCollapsed && asmCacheLine->parent->commentsData.GetComment(currentLine, comment)) {
         uint32 diffLine = zone->asmPreCacheData.maxLineSize + textTotalColumnLength + commentPaddingLength;
         if (config.ShowOnlyDissasm)