diff --git a/cde/programs/dticon/constants.h b/cde/programs/dticon/constants.h
index a2972ed37..9b4be16c8 100644
--- a/cde/programs/dticon/constants.h
+++ b/cde/programs/dticon/constants.h
@@ -97,8 +97,10 @@ typedef struct {
 #define min(a, b)	((a < b) ? a : b)
 #define max(a, b)	((a > b) ? a : b)
 #ifndef abs
+#if !defined(linux)
 #define abs(a)		(((a) < 0) ? -(a) : (a))
 #endif
+#endif
 #define mag(a,b)	((a-b) < 0 ? (b-a) : (a-b))
 
 #define DARK		0