diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 73d88e3..688e49e 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -30,24 +30,12 @@ parameters:
 			count: 3
 			path: src/BrandEmbassyCodingStandard/Sniffs/Classes/TraitUseSpacingSniffTest.php
 
-		-
-			message: '#^Parameter \#2 \$subject of function preg_match expects string, mixed given\.$#'
-			identifier: argument.type
-			count: 1
-			path: src/BrandEmbassyCodingStandard/Sniffs/Commenting/CreateMockFunctionReturnTypeOrderSniff.php
-
 		-
 			message: '#^Parameter \#4 \$startPointer of static method SlevomatCodingStandard\\Helpers\\TokenHelper\:\:findNextContent\(\) expects int, mixed given\.$#'
 			identifier: argument.type
 			count: 1
 			path: src/BrandEmbassyCodingStandard/Sniffs/Commenting/CreateMockFunctionReturnTypeOrderSniff.php
 
-		-
-			message: '#^Parameter \#1 \$string of function strtolower expects string, mixed given\.$#'
-			identifier: argument.type
-			count: 1
-			path: src/BrandEmbassyCodingStandard/Sniffs/ForbiddenElseStatementSniff.php
-
 		-
 			message: '#^Binary operation "\-" between mixed and 1 results in an error\.$#'
 			identifier: binaryOp.invalid
diff --git a/src/BrandEmbassyCodingStandard/Sniffs/Commenting/CreateMockFunctionReturnTypeOrderSniff.php b/src/BrandEmbassyCodingStandard/Sniffs/Commenting/CreateMockFunctionReturnTypeOrderSniff.php
index 604f6ed..31517ff 100644
--- a/src/BrandEmbassyCodingStandard/Sniffs/Commenting/CreateMockFunctionReturnTypeOrderSniff.php
+++ b/src/BrandEmbassyCodingStandard/Sniffs/Commenting/CreateMockFunctionReturnTypeOrderSniff.php
@@ -5,6 +5,8 @@
 use PHP_CodeSniffer\Files\File;
 use PHP_CodeSniffer\Sniffs\Sniff;
 use SlevomatCodingStandard\Helpers\TokenHelper;
+use function assert;
+use function is_string;
 use function preg_match;
 use const T_FUNCTION;
 
@@ -80,6 +82,7 @@ public function process(File $phpcsFile, $stackPtr): void
         }
 
         $returnType = $tokens[$returnTypePtr]['content'];
+        assert(is_string($returnType));
 
         if (preg_match('~^MockInterface&(\w+)$~', $returnType, $matches) !== 1) {
             return;
diff --git a/src/BrandEmbassyCodingStandard/Sniffs/ForbiddenElseStatementSniff.php b/src/BrandEmbassyCodingStandard/Sniffs/ForbiddenElseStatementSniff.php
index 3e6df88..7948427 100644
--- a/src/BrandEmbassyCodingStandard/Sniffs/ForbiddenElseStatementSniff.php
+++ b/src/BrandEmbassyCodingStandard/Sniffs/ForbiddenElseStatementSniff.php
@@ -4,6 +4,8 @@
 
 use PHP_CodeSniffer\Files\File;
 use PHP_CodeSniffer\Sniffs\Sniff;
+use function assert;
+use function is_string;
 use function strtolower;
 use const T_ELSE;
 use const T_ELSEIF;
@@ -37,7 +39,9 @@ public function process(File $phpcsFile, $stackPtr): void
     {
         $tokens = $phpcsFile->getTokens();
 
-        $statement = strtolower($tokens[$stackPtr]['content']);
+        $content = $tokens[$stackPtr]['content'];
+        assert(is_string($content));
+        $statement = strtolower($content);
 
         $error = 'Use of ' . $statement . ' is forbidden. See: https://github.com/BrandEmbassy/developers-manifest/issues/365.';