diff --git a/meta/recipes-devtools/tcltk/tcl/run-ptest b/meta/recipes-devtools/tcltk/tcl/run-ptest
index 46f6cdca333..c01a7a1da28 100644
--- a/meta/recipes-devtools/tcltk/tcl/run-ptest
+++ b/meta/recipes-devtools/tcltk/tcl/run-ptest
@@ -34,6 +34,8 @@ SKIP="$SKIP http11-\*"
 SKIP="$SKIP httpProxy-\*"
 # These tests appear to be load-sensitive (16214)
 SKIP="$SKIP mutex-condition-\*"
+# Timer-related tests are going to be fragile (16324)
+SKIP="$SKIP timer-\*"
 
 # Run all tests in tests/*.test unless tests are specified as arguments
 TESTS=${*:-tests/*.test}
diff --git a/meta/recipes-devtools/tcltk8/tcl8/run-ptest b/meta/recipes-devtools/tcltk8/tcl8/run-ptest
index 86b74a4177d..f4d0e90c0f0 100644
--- a/meta/recipes-devtools/tcltk8/tcl8/run-ptest
+++ b/meta/recipes-devtools/tcltk8/tcl8/run-ptest
@@ -32,6 +32,8 @@ SKIP="$SKIP socket-\* socket_inet\* socket_inet6\*"
 SKIP="$SKIP http11-\*"
 # tries to access google.com
 SKIP="$SKIP httpProxy-\*"
+# Timer-related tests are going to be fragile (16324)
+SKIP="$SKIP timer-\*"
 
 # Run all tests in tests/*.test unless tests are specified as arguments
 TESTS=${*:-tests/*.test}