diff --git a/support/dependencies/dependencies.sh b/support/dependencies/dependencies.sh
index af5ce0e54..44e212dd2 100755
--- a/support/dependencies/dependencies.sh
+++ b/support/dependencies/dependencies.sh
@@ -133,7 +133,9 @@ if [ ! -z "$CXXCOMPILER" ] ; then
 		echo
 		echo "You may have to install 'g++' on your build machine"
 	fi
+fi
 
+if [ -n "$CXXCOMPILER_VERSION" ] ; then
 	CXXCOMPILER_MAJOR=$(echo $CXXCOMPILER_VERSION | sed -e "s/\..*//g")
 	CXXCOMPILER_MINOR=$(echo $CXXCOMPILER_VERSION | sed -e "s/^$CXXCOMPILER_MAJOR\.//g" -e "s/\..*//g")
 	if [ $CXXCOMPILER_MAJOR -lt 3 -o $CXXCOMPILER_MAJOR -eq 2 -a $CXXCOMPILER_MINOR -lt 95 ] ; then