diff --git a/lib/checkstl.cpp b/lib/checkstl.cpp
index 7c4661aae..46ad2057a 100644
--- a/lib/checkstl.cpp
+++ b/lib/checkstl.cpp
@@ -2870,6 +2870,9 @@ void CheckStl::localMutexError(const Token* tok)
 
 void CheckStl::checkMutexes()
 {
+    if (!mSettings->severity.isEnabled(Severity::warning))
+        return;
+
     for (const Scope *function : mTokenizer->getSymbolDatabase()->functionScopes) {
         std::set<nonneg int> checkedVars;
         for (const Token *tok = function->bodyStart; tok != function->bodyEnd; tok = tok->next()) {
diff --git a/lib/checkstl.h b/lib/checkstl.h
index 4eada4e13..c26c74f2b 100644
--- a/lib/checkstl.h
+++ b/lib/checkstl.h
@@ -63,7 +63,6 @@ public:
         checkStl.if_find();
         checkStl.checkFindInsert();
         checkStl.iterators();
-        checkStl.mismatchingContainers();
         checkStl.missingComparison();
         checkStl.outOfBounds();
         checkStl.outOfBoundsIndexExpression();