diff --git a/Makefile b/Makefile
index 243207a66b..b0beca5b43 100644
--- a/Makefile
+++ b/Makefile
@@ -54,7 +54,7 @@ else
 endif
 
 BSD_LOCAL_INC =
-ifneq ($findstring HAIKU,$(OS)),)
+ifneq ($(findstring Haiku,$(OS)),)
 DYLIB_LIB = -ldl
 endif
 ifneq ($(findstring BSD,$(OS)),)