diff --git a/meta/recipes-devtools/tcltk/tcl/run-ptest b/meta/recipes-devtools/tcltk/tcl/run-ptest
index a62b703082..5b9127784e 100644
--- a/meta/recipes-devtools/tcltk/tcl/run-ptest
+++ b/meta/recipes-devtools/tcltk/tcl/run-ptest
@@ -3,9 +3,9 @@
 # clock.test needs a timezone to be set
 export TZ="Europe/London"
 export TCL_LIBRARY=library
-
+SKIPPED_TESTS=
 for i in `ls tests/*.test | awk -F/ '{print $2}'`; do
-    ./tcltest tests/all.tcl -file $i >$i.log 2>&1
+    ./tcltest tests/all.tcl -file $i -skip "$SKIPPED_TESTS" >$i.log 2>&1
     grep -q -F -e "Files with failing tests:" -e "Test files exiting with errors:" $i.log
     if [ $? -eq 0 ]; then
         echo "FAIL: $i"
diff --git a/meta/recipes-devtools/tcltk/tcl_8.6.13.bb b/meta/recipes-devtools/tcltk/tcl_8.6.13.bb
index 921ea7a01d..677a5822bd 100644
--- a/meta/recipes-devtools/tcltk/tcl_8.6.13.bb
+++ b/meta/recipes-devtools/tcltk/tcl_8.6.13.bb
@@ -90,6 +90,11 @@ do_install_ptest() {
 	cp -r ${S}/tests ${D}${PTEST_PATH}
 }
 
+do_install_ptest:append:libc-musl () {
+	# Assumes locales other than provided by musl-locales
+	sed -i -e 's|SKIPPED_TESTS=|SKIPPED_TESTS="unixInit-3*"|' ${D}${PTEST_PATH}/run-ptest
+}
+
 # Fix some paths that might be used by Tcl extensions
 BINCONFIG_GLOB = "*Config.sh"