diff --git a/lib/checkstring.cpp b/lib/checkstring.cpp
index a56b828d5..f24221b22 100644
--- a/lib/checkstring.cpp
+++ b/lib/checkstring.cpp
@@ -39,7 +39,7 @@ void CheckString::checkAlwaysTrueOrFalseStringCompare()
         return;
 
     for (const Token* tok = _tokenizer->tokens(); tok; tok = tok->next()) {
-        if (Token::Match(tok, "strncmp|strcmp|stricmp|strcmpi|strcasecmp|wcscmp|wcsncmp (")) {
+        if (Token::Match(tok, "strncmp|strcmp|stricmp|strcmpi|strcasecmp|strncasecmp|wcscmp|wcsncmp (")) {
             if (Token::Match(tok->tokAt(2), "%str% , %str%")) {
                 const std::string &str1 = tok->strAt(2);
                 const std::string &str2 = tok->strAt(4);
diff --git a/test/teststring.cpp b/test/teststring.cpp
index 0e1b1ad7b..fcbd5fb60 100644
--- a/test/teststring.cpp
+++ b/test/teststring.cpp
@@ -98,6 +98,17 @@ private:
     }
 
     void alwaysTrueFalseStringCompare() {
+        check("void f() {\n"
+              "  if (strcmp(\"A\",\"A\") == 0){}\n"
+              "  if (strncmp(\"A\",\"A\",1) == 0){}\n"
+              "  if (strcasecmp(\"A\",\"A\") == 0){}\n"
+              "  if (strncasecmp(\"A\",\"A\",1) == 0){}\n"
+              "}");
+        ASSERT_EQUALS("[test.cpp:2]: (warning) Unnecessary comparison of static strings.\n"
+                      "[test.cpp:3]: (warning) Unnecessary comparison of static strings.\n"
+                      "[test.cpp:4]: (warning) Unnecessary comparison of static strings.\n"
+                      "[test.cpp:5]: (warning) Unnecessary comparison of static strings.\n", errout.str());
+
         check_preprocess_suppress(
             "#define MACRO \"00FF00\"\n"
             "int main()\n"