diff --git a/examples/img2twit.cpp b/examples/img2twit.cpp
index ca9d967..3a3f641 100644
--- a/examples/img2twit.cpp
+++ b/examples/img2twit.cpp
@@ -1227,7 +1227,7 @@ int main(int argc, char *argv[])
 
                 if(DEBUG_MODE)
                     fprintf(stderr, "%08i -0.%010i %2.010g after op%i(%i)\n",
-                            iter, (int)((error - newerr) * 10000000000L),
+                            iter, (int)((error - newerr) * 10000000000LL),
                             error, op1, pt);
 
                 error = newerr;