diff --git a/cuda_helper.h b/cuda_helper.h
index 841cbd9..f6ff545 100644
--- a/cuda_helper.h
+++ b/cuda_helper.h
@@ -13,6 +13,11 @@
 
 #include <stdint.h>
 
+#ifndef UINT32_MAX
+/* slackware need that */
+#define UINT32_MAX UINT_MAX
+#endif
+
 #ifndef MAX_GPUS
 #define MAX_GPUS 16
 #endif
diff --git a/qubit/qubit_luffa512.cu b/qubit/qubit_luffa512.cu
index e137106..ec40564 100644
--- a/qubit/qubit_luffa512.cu
+++ b/qubit/qubit_luffa512.cu
@@ -23,10 +23,6 @@
 
 #include "cuda_helper.h"
 
-#ifndef UINT32_MAX
-#define UINT32_MAX UINT_MAX
-#endif
-
 typedef unsigned char BitSequence;
 
 __constant__ uint64_t c_PaddedMessage80[16]; // padded message (80 bytes + padding)