diff --git a/cmake/QtTargetHelpers.cmake b/cmake/QtTargetHelpers.cmake
index bc1d8f36202..af775ca5142 100644
--- a/cmake/QtTargetHelpers.cmake
+++ b/cmake/QtTargetHelpers.cmake
@@ -484,7 +484,7 @@ endif()\n\n")
         set(write_implib FALSE)
         set(write_soname FALSE)
         if(target_type STREQUAL "SHARED_LIBRARY")
-            if(WINDOWS)
+            if(WIN32)
                 set(write_implib TRUE)
             else()
                 set(write_soname TRUE)