1 files changed, 1 insertions, 0 deletions

diff --git a/ue2/imgsynth2/cpixmap.cpp b/ue2/imgsynth2/cpixmap.cpp
index 52f9825..83a2a0b 100644
--- a/ue2/imgsynth2/cpixmap.cpp
+++ b/ue2/imgsynth2/cpixmap.cpp
@@ -269,6 +269,7 @@ const std::string CPixmap::getXPMColorID(unsigned int index, unsigned int length
 {
   static const char code[] = PIXMAP_COLORCHARS;
   assert(strlen(code) > 0);
+  assert(length > 0);
   string str("");
   for(unsigned int i = length - 1; i > 0; i--)
   {