diff --git a/lib/checkbufferoverrun.cpp b/lib/checkbufferoverrun.cpp
index f23b36b33..adcd48696 100644
--- a/lib/checkbufferoverrun.cpp
+++ b/lib/checkbufferoverrun.cpp
@@ -1507,7 +1507,7 @@ void CheckBufferOverrun::bufferOverrun()
                 continue;
 
             const Variable *var = pointerToken->variable();
-            if (!var || !var->isArray())
+            if (!var || !var->isArray() || var->dimension(0) <= 0)
                 continue;
 
             const ValueFlow::Value *value = indexToken->getValueGE(var->dimension(0)+1, _settings);