diff --git a/plugins/python-build/bin/python-build b/plugins/python-build/bin/python-build
index 75f54407..667d1c4a 100755
--- a/plugins/python-build/bin/python-build
+++ b/plugins/python-build/bin/python-build
@@ -1645,7 +1645,7 @@ use_homebrew_tcltk() {
     if [[ -z "$PYTHON_BUILD_TCLTK_USE_PKGCONFIG" ]]; then
       local tcltk_version="$(sh -c '. '"$tcltk_libdir"'/lib/tclConfig.sh; echo $TCL_VERSION')"
       package_option python configure --with-tcltk-libs="-L$tcltk_libdir/lib -ltcl$tcltk_version -ltk$tcltk_version"
-	if [ -d "-I$tcltk_libdir/include/tcl-tk" ]; then
+	if [ -d "$tcltk_libdir/include/tcl-tk" ]; then
    		package_option python configure --with-tcltk-includes="-I$tcltk_libdir/include/tcl-tk"
 	fi
 		package_option python configure --with-tcltk-includes="-I$tcltk_libdir/include"