diff --git a/modules/rostests/apitests/win32nt/CMakeLists.txt b/modules/rostests/apitests/win32nt/CMakeLists.txt
index 918903b872b..31e649e0c14 100644
--- a/modules/rostests/apitests/win32nt/CMakeLists.txt
+++ b/modules/rostests/apitests/win32nt/CMakeLists.txt
@@ -35,7 +35,7 @@ list(APPEND SOURCE
     ntgdi/NtGdiSelectPen.c
     ntgdi/NtGdiSetBitmapBits.c
     ntgdi/NtGdiSetDIBitsToDeviceInternal.c
-    ntgdi/NtGdiTransformPoints
+    ntgdi/NtGdiTransformPoints.c
 
 #    ntuser/NtUserCallHwnd.c
 #    ntuser/NtUserCallHwndLock.c