diff --git a/tests/client/Makefile.am b/tests/client/Makefile.am
index ea8033a2c6..e8ed64b012 100644
--- a/tests/client/Makefile.am
+++ b/tests/client/Makefile.am
@@ -51,9 +51,6 @@ LIBS = $(BLANK_AT_MAKETIME)
 if USE_CPPFLAG_CURL_STATICLIB
 AM_CPPFLAGS += -DCURL_STATICLIB
 endif
-if DOING_NATIVE_WINDOWS
-AM_CPPFLAGS += -DWIN32_LEAN_AND_MEAN
-endif
 AM_CPPFLAGS += -DCURL_NO_OLDIES
 
 bundle_extra =