diff --git a/plug-ins/file-icns/file-icns-load.c b/plug-ins/file-icns/file-icns-load.c
index c8f16fef60..f2298c056e 100644
--- a/plug-ins/file-icns/file-icns-load.c
+++ b/plug-ins/file-icns/file-icns-load.c
@@ -323,7 +323,7 @@ icns_decompress (guchar       *dest,
 
               for (run -= 125; run > 0; run--)
                 {
-                  if (out > max)
+                  if (out >= max)
                     {
                       g_message ("Corrupt icon? compressed run overflows output size.");
                       return FALSE;
@@ -341,7 +341,7 @@ icns_decompress (guchar       *dest,
                       g_message ("Corrupt icon: uncompressed run overflows input size.");
                       return FALSE;
                     }
-                  if (out > max)
+                  if (out >= max)
                     {
                       g_message ("Corrupt icon: uncompressed run overflows output size.");
                       return FALSE;