diff --git a/client/hardnested/hardnested_bf_core.c b/client/hardnested/hardnested_bf_core.c
index 0d7d238a9..6ade3cbe3 100644
--- a/client/hardnested/hardnested_bf_core.c
+++ b/client/hardnested/hardnested_bf_core.c
@@ -77,7 +77,7 @@ THE SOFTWARE.
 #endif
 
 #define VECTOR_SIZE (MAX_BITSLICES/8)
-typedef unsigned int __attribute__((aligned(VECTOR_SIZE))) __attribute__((vector_size(VECTOR_SIZE))) bitslice_value_t;
+typedef uint32_t __attribute__((aligned(VECTOR_SIZE))) __attribute__((vector_size(VECTOR_SIZE))) bitslice_value_t;
 typedef union {
         bitslice_value_t value;
         uint64_t bytes64[MAX_BITSLICES/64];