diff --git a/src/cpu/cpu.h b/src/cpu/cpu.h
index 6badc4b30..d60d7159f 100644
--- a/src/cpu/cpu.h
+++ b/src/cpu/cpu.h
@@ -143,7 +143,7 @@ typedef struct {
     const char *name;
     uint64_t    cpu_type;
     const FPU  *fpus;
-    int         rspeed;
+    uint32_t    rspeed;
     double      multi;
     uint16_t    voltage;
     uint32_t    edx_reset;