diff --git a/test/linter/ruff_spec.lua b/test/linter/ruff_spec.lua
index 0028eca..556f249 100644
--- a/test/linter/ruff_spec.lua
+++ b/test/linter/ruff_spec.lua
@@ -20,9 +20,9 @@ describe('ruff', function()
         end_col = 7,
         end_lnum = 0,
         lnum = 0,
-        message = '`os` imported but unused [F401]',
+        message = '`os` imported but unused[F401]',
         namespace = 1,
-        severity = 1,
+        severity = 4,
         source = 'ruff',
       },
       {
@@ -31,9 +31,9 @@ describe('ruff', function()
         end_col = 2,
         end_lnum = 4,
         lnum = 4,
-        message = 'Local variable `a` is assigned to but never used [F841]',
+        message = 'Local variable `a` is assigned to but never used[F841]',
         namespace = 1,
-        severity = 1,
+        severity = 4,
         source = 'ruff',
       },
       {
@@ -42,9 +42,9 @@ describe('ruff', function()
         end_col = 5,
         end_lnum = 4,
         lnum = 4,
-        message = 'Local variable `b` is assigned to but never used [F841]',
+        message = 'Local variable `b` is assigned to but never used[F841]',
         namespace = 1,
-        severity = 1,
+        severity = 4,
         source = 'ruff',
       },
     }, diagnostics)
diff --git a/test/linter/selene_spec.lua b/test/linter/selene_spec.lua
index 345bb80..9a3a818 100644
--- a/test/linter/selene_spec.lua
+++ b/test/linter/selene_spec.lua
@@ -21,7 +21,7 @@ describe('selene', function()
         end_col = 0,
         end_lnum = 4,
         lnum = 4,
-        message = '`U` is not defined [undefined_variable]',
+        message = '`U` is not defined[undefined_variable]',
         namespace = ns,
         severity = 1,
         source = 'selene',
diff --git a/test/linter/sqlfluff_spec.lua b/test/linter/sqlfluff_spec.lua
index e72591c..65dcbb7 100644
--- a/test/linter/sqlfluff_spec.lua
+++ b/test/linter/sqlfluff_spec.lua
@@ -17,7 +17,7 @@ describe('sqlfluff', function()
         end_col = 0,
         end_lnum = 0,
         lnum = 0,
-        message = 'LT09: Select targets should be on a new line unless there is only one select target. [nil]',
+        message = 'LT09: Select targets should be on a new line unless there is only one select target.',
         namespace = 1,
         severity = 3,
         source = 'sqlfluff',
@@ -28,7 +28,7 @@ describe('sqlfluff', function()
         end_col = 0,
         end_lnum = 0,
         lnum = 0,
-        message = 'ST06: Select wildcards then simple targets before calculations and aggregates. [nil]',
+        message = 'ST06: Select wildcards then simple targets before calculations and aggregates.',
         namespace = 1,
         severity = 3,
         source = 'sqlfluff',
@@ -39,7 +39,7 @@ describe('sqlfluff', function()
         end_col = 6,
         end_lnum = 0,
         lnum = 0,
-        message = "LT02: Expected line break and indent of 4 spaces before 'a'. [nil]",
+        message = "LT02: Expected line break and indent of 4 spaces before 'a'.",
         namespace = 1,
         severity = 3,
         source = 'sqlfluff',
@@ -50,7 +50,7 @@ describe('sqlfluff', function()
         end_col = 8,
         end_lnum = 0,
         lnum = 0,
-        message = "LT01: Expected single whitespace between naked identifier and binary operator '+'. [nil]",
+        message = "LT01: Expected single whitespace between naked identifier and binary operator '+'.",
         namespace = 1,
         severity = 3,
         source = 'sqlfluff',
@@ -61,7 +61,7 @@ describe('sqlfluff', function()
         end_col = 9,
         end_lnum = 0,
         lnum = 0,
-        message = "LT01: Expected single whitespace between binary operator '+' and naked identifier. [nil]",
+        message = "LT01: Expected single whitespace between binary operator '+' and naked identifier.",
         namespace = 1,
         severity = 3,
         source = 'sqlfluff',
@@ -72,7 +72,7 @@ describe('sqlfluff', function()
         end_col = 10,
         end_lnum = 0,
         lnum = 0,
-        message = "LT01: Expected only single space before 'AS' keyword. Found '  '. [nil]",
+        message = "LT01: Expected only single space before 'AS' keyword. Found '  '.",
         namespace = 1,
         severity = 3,
         source = 'sqlfluff',
@@ -83,7 +83,7 @@ describe('sqlfluff', function()
         end_col = 0,
         end_lnum = 1,
         lnum = 1,
-        message = 'LT02: Expected indent of 4 spaces. [nil]',
+        message = 'LT02: Expected indent of 4 spaces.',
         namespace = 1,
         severity = 3,
         source = 'sqlfluff',
@@ -94,7 +94,7 @@ describe('sqlfluff', function()
         end_col = 8,
         end_lnum = 1,
         lnum = 1,
-        message = "LT02: Expected line break and no indent before 'from'. [nil]",
+        message = "LT02: Expected line break and no indent before 'from'.",
         namespace = 1,
         severity = 3,
         source = 'sqlfluff',
@@ -105,7 +105,7 @@ describe('sqlfluff', function()
         end_col = 9,
         end_lnum = 1,
         lnum = 1,
-        message = 'CP01: Keywords must be consistently upper case. [nil]',
+        message = 'CP01: Keywords must be consistently upper case.',
         namespace = 1,
         severity = 3,
         source = 'sqlfluff',