1 files changed, 2 insertions, 2 deletions
diff --git a/rts/RtsUtils.c b/rts/RtsUtils.c
index 51c1250682..9021909dfa 100644
--- a/rts/RtsUtils.c
+++ b/rts/RtsUtils.c
@@ -138,8 +138,8 @@ static void addAllocation(void *addr, size_t len) {
         /* This doesn't actually help as we haven't looked at the flags
          * at the time that it matters (while running constructors) */
         IF_DEBUG(sanity,
-                 debugBelch("Ignoring allocation %p %zd as allocs is NULL\n",
-                            addr, len);)
+                 debugBelch("Ignoring allocation %p %d as allocs is NULL\n",
+                            addr, (int)len);)
     }
 }