diff --git a/pnor_partition_table.cpp b/pnor_partition_table.cpp
index bb9e05d..b42907c 100644
--- a/pnor_partition_table.cpp
+++ b/pnor_partition_table.cpp
@@ -233,7 +233,7 @@
         }
     }
 
-    MSG_ERR("Partition corresponding to offset %x not found", offset);
+    MSG_ERR("Partition corresponding to offset %zu not found", offset);
     elog<InternalFailure>();
 
     static pnor_partition p{};