diff --git a/libcelt/fixed_c5x.h b/libcelt/fixed_c5x.h
index ee999fa1..87bdc77b 100644
--- a/libcelt/fixed_c5x.h
+++ b/libcelt/fixed_c5x.h
@@ -37,12 +37,6 @@
 
 #include "dsplib.h"
 
-#undef ABS16
-#define ABS16(x) _abss(x)
-
-#undef ABS32
-#define ABS32(x) _labss(x)
-
 #undef MAX16
 #define MAX16(a,b) _max(a,b)