diff --git a/0001-intel-compiler-don-t-invert-if-s-on-gen5-or-older.patch b/0001-intel-compiler-don-t-invert-if-s-on-gen5-or-older.patch
new file mode 100644
index 0000000..f52f858
--- /dev/null
+++ b/0001-intel-compiler-don-t-invert-if-s-on-gen5-or-older.patch
@@ -0,0 +1,32 @@
+From db083cf2381638f348e31c9a832e0a8821132e21 Mon Sep 17 00:00:00 2001
+From: Dave Airlie <airlied@redhat.com>
+Date: Thu, 21 Dec 2023 10:39:08 +1000
+Subject: [PATCH] intel/compiler: don't invert if's on gen5 or older
+
+I'm not sure why this works, but since opt_if was changed,
+gtk4-demo hasn't worked on gen4/5.
+
+I tried to track through some opt stages that might be dropping
+predicate_inverse or something, but can't spot anything yet.
+
+Fixes: 31b5f5a51f3a ("nir/opt_if: Simplify if's with general conditions")
+---
+ src/intel/compiler/brw_fs_nir.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp
+index b9f7366763b..0e57c343b54 100644
+--- a/src/intel/compiler/brw_fs_nir.cpp
++++ b/src/intel/compiler/brw_fs_nir.cpp
+@@ -357,7 +357,7 @@ fs_visitor::nir_emit_if(nir_if *if_stmt)
+     * the source, but invert the predicate on the if instruction.
+     */
+    nir_alu_instr *cond = nir_src_as_alu_instr(if_stmt->condition);
+-   if (cond != NULL && cond->op == nir_op_inot) {
++   if (devinfo->ver > 5 && cond != NULL && cond->op == nir_op_inot) {
+       invert = true;
+       cond_reg = get_nir_src(cond->src[0].src);
+       cond_reg = offset(cond_reg, bld, cond->src[0].swizzle[0]);
+-- 
+2.43.0
+
diff --git a/mesa.spec b/mesa.spec
index f59328b..7a86b48 100644
--- a/mesa.spec
+++ b/mesa.spec
@@ -75,6 +75,7 @@ Source1:        Mesa-MLAA-License-Clarification-Email.txt
 
 Patch10:        gnome-shell-glthread-disable.patch
 Patch11:        0001-intel-compiler-move-gen5-final-pass-to-actually-be-f.patch
+Patch12:        0001-intel-compiler-don-t-invert-if-s-on-gen5-or-older.patch
 
 BuildRequires:  meson >= 1.2.0
 BuildRequires:  gcc