--- extern/cloop/src/tests/test1/CTest.c
+++ extern/cloop/src/tests/test1/CTest.c
@@ -402,7 +402,7 @@
 	struct CALC_IFactory* (*createFactory)();
 
 #ifdef WIN32
-	createFactory = (struct Factory* (*)()) GetProcAddress(library, "createFactory");
+	createFactory = (struct CALC_IFactory* (*)()) GetProcAddress(library, "createFactory");
 #else
 	createFactory = dlsym(library, "createFactory");
 #endif