diff --git a/hurricane/src/hurricane/Commons.cpp b/hurricane/src/hurricane/Commons.cpp
index feb0d5dd..46d90136 100644
--- a/hurricane/src/hurricane/Commons.cpp
+++ b/hurricane/src/hurricane/Commons.cpp
@@ -107,7 +107,7 @@ void  ltraceout (unsigned int level, unsigned int count )
 string  demangle ( const char* symbol )
 {  
   int          status;
-  unsigned int length = 4096;
+  size_t       length = 4096;
   char         demangled[length];
 
   abi::__cxa_demangle ( symbol, demangled, &length, &status );