diff --git a/client/windows/Makefile.am b/client/windows/Makefile.am
index 041f57bc..6d69511d 100644
--- a/client/windows/Makefile.am
+++ b/client/windows/Makefile.am
@@ -141,8 +141,7 @@ RED_OGL_SRCS =						\
 	$(CLIENT_DIR)/glc.cpp				\
 	$(CLIENT_DIR)/red_gl_canvas.cpp			\
 	$(CLIENT_DIR)/red_gl_canvas.h			\
-	$(CLIENT_DIR)/red_pixmap_gl.h			\
-	red_pixmap_gl.cpp
+	$(CLIENT_DIR)/red_pixmap_gl.h
 else
 RED_OGL_SRCS =
 endif