diff --git a/runtime/src/gpu_gl_renderer.c b/runtime/src/gpu_gl_renderer.c
index 0ed2d939..b25c5868 100644
--- a/runtime/src/gpu_gl_renderer.c
+++ b/runtime/src/gpu_gl_renderer.c
@@ -1366,7 +1366,7 @@ static const char *TEX_FS =
     "}\n"
     "int stable_texel(ivec2 p){\n"
     "  /* Clamp before wrap, so a footprint left of u=0 cannot pick up u=255. */\n"
-    "  if ((u_twin.x | u_twin.y) == 0) p=clamp(p,v_limits.xy,v_limits.zw);\n"
+    "  if ((v_twin & 1023) == 0) p=clamp(p,v_limits.xy,v_limits.zw);\n"
     "  return fetch_texel(p.x,p.y);\n"
     "}\n"
     "vec4 stable_bilinear(vec2 uv,int stp){\n"
diff --git a/runtime/tests/test_interp_cop0_read_sample.c b/runtime/tests/test_interp_cop0_read_sample.c
index 3e160db6..89b5d219 100644
--- a/runtime/tests/test_interp_cop0_read_sample.c
+++ b/runtime/tests/test_interp_cop0_read_sample.c
@@ -20,6 +20,9 @@
 #include <string.h>
 #include "cpu_state.h"
 
+/* No mod hooks are active in this interpreter fixture. */
+uint32_t g_psx_mod_instruction_hooks = 0;
+
 int interp_test_step(CPUState *cpu, uint32_t pc, uint32_t insn, uint32_t *next);
 
 /* Clock, cache and device seams read on the charged path. */
diff --git a/runtime/tests/test_interp_refused_game_text.c b/runtime/tests/test_interp_refused_game_text.c
index 37b86f55..49887aee 100644
--- a/runtime/tests/test_interp_refused_game_text.c
+++ b/runtime/tests/test_interp_refused_game_text.c
@@ -20,6 +20,10 @@
 #include <string.h>
 #include "cpu_state.h"
 
+/* No mod hooks are active in this interpreter fixture. */
+uint32_t g_psx_mod_instruction_hooks = 0;
+uint32_t g_psx_mod_function_entry_hooks = 0;
+
 int dirty_ram_dispatch(CPUState *cpu, uint32_t addr, uint32_t stop_addr);
 extern uint64_t g_dirty_ram_blocks_run;   /* one per interpreter hand-back */