diff --git a/src/gui/image/qppmhandler.cpp b/src/gui/image/qppmhandler.cpp
index 9cacfab2..6ab58b25 100644
--- a/src/gui/image/qppmhandler.cpp
+++ b/src/gui/image/qppmhandler.cpp
@@ -108,7 +108,7 @@ static bool read_pbm_header(QIODevice *device, char& type, int& w, int& h, int&
     else
         mcc = read_pbm_int(device);               // get max color component
 
-    if (w <= 0 || w > 32767 || h <= 0 || h > 32767 || mcc <= 0)
+    if (w <= 0 || w > 32767 || h <= 0 || h > 32767 || mcc <= 0 || mcc > 0xffff)
         return false;                                        // weird P.M image
 
     return true;