diff --git a/makefile b/makefile
index c2c9531..0e4d9f7 100644
--- a/makefile
+++ b/makefile
@@ -7,13 +7,6 @@ INCDIR   := engine/include
 BUILDDIR := build
 LIBNAME  := libchess
 
-UNAME_S  := $(shell uname -s)
-ifeq ($(UNAME_S),Darwin)
-  SOEXT := dylib
-else
-  SOEXT := so
-endif
-
 SRC := $(wildcard $(SRCDIR)/*.c)
 OBJ := $(patsubst $(SRCDIR)/%.c,$(BUILDDIR)/%.o,$(SRC))
 LIB := $(BUILDDIR)/$(LIBNAME).$(SOEXT)