diff --git a/plugins/GSdx/res/glsl/tfx_fs.glsl b/plugins/GSdx/res/glsl/tfx_fs.glsl
index cd290bfe2c..6fe698249b 100644
--- a/plugins/GSdx/res/glsl/tfx_fs.glsl
+++ b/plugins/GSdx/res/glsl/tfx_fs.glsl
@@ -237,7 +237,7 @@ vec4 sample_depth(vec2 st)
     vec2 uv_f = vec2(clamp_wrap_uv_depth(ivec2(st))) * vec2(ScalingFactor.xy) * vec2(1.0f/16.0f);
     ivec2 uv = ivec2(uv_f);
 
-    vec4 t;
+    vec4 t = vec4(0.0f);
 #if PS_TALES_OF_ABYSS_HLE == 1
     // Warning: UV can't be used in channel effect
     int depth = fetch_raw_depth();
diff --git a/plugins/GSdx/res/glsl_source.h b/plugins/GSdx/res/glsl_source.h
index c3beda937d..05f32c5cdb 100644
--- a/plugins/GSdx/res/glsl_source.h
+++ b/plugins/GSdx/res/glsl_source.h
@@ -1080,7 +1080,7 @@ static const char* const tfx_fs_all_glsl =
 	"    vec2 uv_f = vec2(clamp_wrap_uv_depth(ivec2(st))) * vec2(ScalingFactor.xy) * vec2(1.0f/16.0f);\n"
 	"    ivec2 uv = ivec2(uv_f);\n"
 	"\n"
-	"    vec4 t;\n"
+	"    vec4 t = vec4(0.0f);\n"
 	"#if PS_TALES_OF_ABYSS_HLE == 1\n"
 	"    // Warning: UV can't be used in channel effect\n"
 	"    int depth = fetch_raw_depth();\n"