diff --git a/lib/checkother.cpp b/lib/checkother.cpp
index 733f000a8..a8db352e9 100644
--- a/lib/checkother.cpp
+++ b/lib/checkother.cpp
@@ -2757,7 +2757,7 @@ void CheckOther::checkReturnIgnoredReturnValue()
             if (tok->varId() || !Token::Match(tok, "%var% (") || tok->strAt(-1) == ".")
                 continue;
 
-            if (!tok->next()->astParent() && _settings->library.useretval.find(tok->str()) != _settings->library.useretval.end())
+            if (!tok->next()->astParent() && (!tok->function() || !Token::Match(tok->function()->retDef, "void %var%")) && _settings->library.useretval.find(tok->str()) != _settings->library.useretval.end())
                 ignoredReturnValueError(tok, tok->str());
         }
     }
diff --git a/test/testother.cpp b/test/testother.cpp
index 4f207f111..dfd396959 100644
--- a/test/testother.cpp
+++ b/test/testother.cpp
@@ -6265,6 +6265,18 @@ private:
               "}", "test.cpp", false, false, false, true, &settings_std);
         ASSERT_EQUALS("[test.cpp:2]: (warning) Return value of function strcmp() is not used.\n", errout.str());
 
+        check("bool strcmp(char* a, char* b);\n" // cppcheck sees a custom strcmp definition, but it returns a value. Assume it is the one specified in the library.
+              "void foo() {\n"
+              "    strcmp(a, b);\n"
+              "}", "test.cpp", false, false, false, true, &settings_std);
+        ASSERT_EQUALS("[test.cpp:3]: (warning) Return value of function strcmp() is not used.\n", errout.str());
+
+        check("void strcmp(char* a, char* b);\n" // cppcheck sees a custom strcmp definition which returns void!
+              "void foo() {\n"
+              "    strcmp(a, b);\n"
+              "}", "test.cpp", false, false, false, true, &settings_std);
+        ASSERT_EQUALS("", errout.str());
+
         check("void foo() {\n"
               "    return strcmp(a, b);\n"
               "}", "test.cpp", false, false, false, true, &settings_std);