diff --git a/src/Make_ming.mak b/src/Make_ming.mak
index 0a91789..19896e2 100644
--- a/src/Make_ming.mak
+++ b/src/Make_ming.mak
@@ -215,12 +215,14 @@
 ifndef RUBY_PLATFORM
 ifeq ($(RUBY_VER), 16)
 RUBY_PLATFORM = i586-mswin32
-else ifneq ("X$(wildcard, $(RUBY)/lib/ruby/$(RUBY_VER_LONG)/i386-mingw32)", X)
+else
+ifneq ($(wildcard $(RUBY)/lib/ruby/$(RUBY_VER_LONG)/i386-mingw32),)
 RUBY_PLATFORM = i386-mingw32
 else
 RUBY_PLATFORM = i386-mswin32
 endif
 endif
+endif
 
 ifndef RUBY_INSTALL_NAME
 ifeq ($(RUBY_VER), 16)