diff --git a/dev-libs/glib/glib-2.76.4.ebuild b/dev-libs/glib/glib-2.76.4.ebuild
index 52b264f3f7017..9f9236bbcf7e5 100644
--- a/dev-libs/glib/glib-2.76.4.ebuild
+++ b/dev-libs/glib/glib-2.76.4.ebuild
@@ -199,7 +199,7 @@ multilib_src_configure() {
 	)
 
 	# Workaround for bug #938302
-	if use systemtap && ! has_version "dev-debug/systemtap[dtrace-symlink(-)]" ; then
+	if use systemtap && has_version "dev-debug/systemtap[-dtrace-symlink(+)]" ; then
 		local native_file="${T}"/meson.${CHOST}.ini.local
 		cat >> ${native_file} <<-EOF || die
 		[binaries]
diff --git a/dev-libs/glib/glib-2.78.3.ebuild b/dev-libs/glib/glib-2.78.3.ebuild
index 52b264f3f7017..9f9236bbcf7e5 100644
--- a/dev-libs/glib/glib-2.78.3.ebuild
+++ b/dev-libs/glib/glib-2.78.3.ebuild
@@ -199,7 +199,7 @@ multilib_src_configure() {
 	)
 
 	# Workaround for bug #938302
-	if use systemtap && ! has_version "dev-debug/systemtap[dtrace-symlink(-)]" ; then
+	if use systemtap && has_version "dev-debug/systemtap[-dtrace-symlink(+)]" ; then
 		local native_file="${T}"/meson.${CHOST}.ini.local
 		cat >> ${native_file} <<-EOF || die
 		[binaries]
diff --git a/dev-libs/glib/glib-2.78.4-r1.ebuild b/dev-libs/glib/glib-2.78.4-r1.ebuild
index 6ae0c3800fd5f..6155dc22b039a 100644
--- a/dev-libs/glib/glib-2.78.4-r1.ebuild
+++ b/dev-libs/glib/glib-2.78.4-r1.ebuild
@@ -208,7 +208,7 @@ multilib_src_configure() {
 	)
 
 	# Workaround for bug #938302
-	if use systemtap && ! has_version "dev-debug/systemtap[dtrace-symlink(-)]" ; then
+	if use systemtap && has_version "dev-debug/systemtap[-dtrace-symlink(+)]" ; then
 		local native_file="${T}"/meson.${CHOST}.ini.local
 		cat >> ${native_file} <<-EOF || die
 		[binaries]
diff --git a/dev-libs/glib/glib-2.78.6.ebuild b/dev-libs/glib/glib-2.78.6.ebuild
index 004b9796f1595..084d5059aa142 100644
--- a/dev-libs/glib/glib-2.78.6.ebuild
+++ b/dev-libs/glib/glib-2.78.6.ebuild
@@ -207,7 +207,7 @@ multilib_src_configure() {
 	)
 
 	# Workaround for bug #938302
-	if use systemtap && ! has_version "dev-debug/systemtap[dtrace-symlink(-)]" ; then
+	if use systemtap && has_version "dev-debug/systemtap[-dtrace-symlink(+)]" ; then
 		local native_file="${T}"/meson.${CHOST}.ini.local
 		cat >> ${native_file} <<-EOF || die
 		[binaries]
diff --git a/dev-libs/glib/glib-2.80.4.ebuild b/dev-libs/glib/glib-2.80.4.ebuild
index 79fbaf94dbc0a..e67299e0d3657 100644
--- a/dev-libs/glib/glib-2.80.4.ebuild
+++ b/dev-libs/glib/glib-2.80.4.ebuild
@@ -208,7 +208,7 @@ multilib_src_configure() {
 	)
 
 	# Workaround for bug #938302
-	if use systemtap && ! has_version "dev-debug/systemtap[dtrace-symlink(-)]" ; then
+	if use systemtap && has_version "dev-debug/systemtap[-dtrace-symlink(+)]" ; then
 		local native_file="${T}"/meson.${CHOST}.ini.local
 		cat >> ${native_file} <<-EOF || die
 		[binaries]