diff --git a/src/pfr/pfrload.c b/src/pfr/pfrload.c
index 4f8416582..53ce625a7 100644
--- a/src/pfr/pfrload.c
+++ b/src/pfr/pfrload.c
@@ -305,7 +305,7 @@
     /* - we need at least 18 bytes for a log font record */
     /* - the overall size is at least 95 bytes plus the  */
     /*   log header and log font records                 */
-    if ( count > ( ( 1 << 16 ) - 2 ) / 5                ||
+    if ( count > (FT_UInt)(( 1L << 16 ) - 2 ) / 5       ||
          2 + count * 5 >= stream->size - section_offset ||
          95 + count * ( 5 + 18 ) >= stream->size        )
     {