diff --git a/files/shaders/compatibility/water.frag b/files/shaders/compatibility/water.frag
index dbf36560b3..d657989282 100644
--- a/files/shaders/compatibility/water.frag
+++ b/files/shaders/compatibility/water.frag
@@ -171,6 +171,10 @@ void main(void)
     float specular = pow(atan(phongTerm * SPEC_MAGIC), SPEC_HARDNESS) * SPEC_BRIGHTNESS;
     specular = clamp(specular, 0.0, 1.0) * shadow * sunSpec.a;
 
+    // disable sun specular when underwater
+    if (cameraPos.z < 0.0)
+        specular = 0.0;
+
     // artificial specularity to make rain ripples more noticeable
     vec3 skyColorEstimate = vec3(max(0.0, mix(-0.3, 1.0, sunFade)));
     vec3 rainSpecular = abs(rainRipple.w)*mix(skyColorEstimate, vec3(1.0), 0.05)*0.5;