diff --git a/Testing/Applications/otbWrapperApplicationDocTests.cxx b/Testing/Applications/otbWrapperApplicationDocTests.cxx
index 0cf443383562e52bdd5292a6e4f1f95e59c7826d..d77b5b9fd30a0ea09232c873a8a6dbffd09e75d1 100644
--- a/Testing/Applications/otbWrapperApplicationDocTests.cxx
+++ b/Testing/Applications/otbWrapperApplicationDocTests.cxx
@@ -30,7 +30,7 @@ int otbWrapperApplicationDocTest(int argc, char* argv[])
     return EXIT_FAILURE;
     }
   // Load path
-  for( unsigned int i=2; i<argc; i++)
+  for( int i=2; i<argc; i++)
     {
     otb::Wrapper::ApplicationRegistry::AddApplicationPath(argv[i]);
     }