diff --git a/libs/gfx/api/gles30-emscripten/source/gl.cpp b/libs/gfx/api/gles30-emscripten/source/gl.cpp
index e7fee7e6..32b3bd4b 100644
--- a/libs/gfx/api/gles30-emscripten/source/gl.cpp
+++ b/libs/gfx/api/gles30-emscripten/source/gl.cpp
@@ -897,6 +897,7 @@ precision highp int;
 precision highp float;
 precision highp sampler2D;
 precision highp usampler2D;
+precision highp sampler2DShadow;
 )";
 		}
 
diff --git a/libs/gfx/api/gles32/source/gl.cpp b/libs/gfx/api/gles32/source/gl.cpp
index a04536c8..bf041995 100644
--- a/libs/gfx/api/gles32/source/gl.cpp
+++ b/libs/gfx/api/gles32/source/gl.cpp
@@ -1269,6 +1269,7 @@ precision highp int;
 precision highp float;
 precision highp sampler2D;
 precision highp usampler2D;
+precision highp sampler2DShadow;
 )";
 		}