diff --git a/cfg/qt.cfg b/cfg/qt.cfg
index b1af63e99..cc41e5ab4 100644
--- a/cfg/qt.cfg
+++ b/cfg/qt.cfg
@@ -78,6 +78,16 @@
       <not-uninit/>
     </arg>
   </function>
+  <!-- QString & QString::asprintf(const char * cformat, ...); -->
+  <function name="QString::asprintf">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <formatstr/>
+    <arg nr="1">
+      <formatstr/>
+      <not-uninit/>
+    </arg>
+  </function>
   <define name="Q_DECL_EXPORT" value=""/>
   <define name="Q_DECL_IMPORT" value=""/>
   <define name="Q_DECLARE_FLAGS(x,y)" value=""/>
diff --git a/test/testio.cpp b/test/testio.cpp
index 50806066e..18c3126c6 100644
--- a/test/testio.cpp
+++ b/test/testio.cpp
@@ -2828,6 +2828,12 @@ private:
               "    string.sprintf(\"%d\", f);\n"
               "}", false, false, Settings::Win32A);
         ASSERT_EQUALS("[test.cpp:3]: (warning) %d in format string (no. 1) requires 'int' but the argument type is 'float'.\n", errout.str());
+
+        check("void foo(float f) {\n"
+              "    QString string;\n"
+              "    string = QString::asprintf(\"%d\", f);\n"
+              "}", false, false, Settings::Win32A);
+        ASSERT_EQUALS("[test.cpp:3]: (warning) %d in format string (no. 1) requires 'int' but the argument type is 'float'.\n", errout.str());
     }
 
     void testTernary() {  // ticket #6182