diff --git a/jme3-core/src/main/resources/Common/MatDefs/Light/PBRLighting.frag b/jme3-core/src/main/resources/Common/MatDefs/Light/PBRLighting.frag
index b6581888b..a38cbc138 100644
--- a/jme3-core/src/main/resources/Common/MatDefs/Light/PBRLighting.frag
+++ b/jme3-core/src/main/resources/Common/MatDefs/Light/PBRLighting.frag
@@ -2,7 +2,7 @@
 #import "Common/ShaderLib/PBR.glsllib"
 #import "Common/ShaderLib/Parallax.glsllib"
 #import "Common/ShaderLib/Lighting.glsllib"
-#import "Common/ShaderLib/InPassShadows.glsl"
+#import "Common/ShaderLib/InPassShadows.glsllib"
 
 varying vec2 texCoord;
 #ifdef SEPARATE_TEXCOORD
diff --git a/jme3-core/src/main/resources/Common/MatDefs/Light/PBRLighting.vert b/jme3-core/src/main/resources/Common/MatDefs/Light/PBRLighting.vert
index 99c50564f..45d484181 100644
--- a/jme3-core/src/main/resources/Common/MatDefs/Light/PBRLighting.vert
+++ b/jme3-core/src/main/resources/Common/MatDefs/Light/PBRLighting.vert
@@ -1,7 +1,7 @@
 #import "Common/ShaderLib/GLSLCompat.glsllib"
 #import "Common/ShaderLib/Instancing.glsllib"
 #import "Common/ShaderLib/Skinning.glsllib"
-#import "Common/ShaderLib/InPassShadows.glsl"
+#import "Common/ShaderLib/InPassShadows.glsllib"
 
 
 uniform vec4 m_BaseColor;
diff --git a/jme3-core/src/main/resources/Common/MatDefs/Light/StaticLighting.frag b/jme3-core/src/main/resources/Common/MatDefs/Light/StaticLighting.frag
index 7366a60d8..f458a556c 100755
--- a/jme3-core/src/main/resources/Common/MatDefs/Light/StaticLighting.frag
+++ b/jme3-core/src/main/resources/Common/MatDefs/Light/StaticLighting.frag
@@ -1,6 +1,6 @@
 #import "Common/ShaderLib/GLSLCompat.glsllib"
 #import "Common/ShaderLib/Lighting.glsllib"
-#import "Common/ShaderLib/InPassShadows.glsl"
+#import "Common/ShaderLib/InPassShadows.glsllib"
 #import "Common/ShaderLib/PBR.glsllib"
 
 #ifndef NUM_DIR_LIGHTS
diff --git a/jme3-core/src/main/resources/Common/MatDefs/Light/StaticLighting.vert b/jme3-core/src/main/resources/Common/MatDefs/Light/StaticLighting.vert
index c974fa440..9a78fa67a 100755
--- a/jme3-core/src/main/resources/Common/MatDefs/Light/StaticLighting.vert
+++ b/jme3-core/src/main/resources/Common/MatDefs/Light/StaticLighting.vert
@@ -1,7 +1,7 @@
 #import "Common/ShaderLib/GLSLCompat.glsllib"
 #import "Common/ShaderLib/Skinning.glsllib"
 #import "Common/ShaderLib/Instancing.glsllib"
-#import "Common/ShaderLib/InPassShadows.glsl"
+#import "Common/ShaderLib/InPassShadows.glsllib"
 
 attribute vec3 inPosition;
 attribute vec3 inNormal;
diff --git a/jme3-core/src/main/resources/Common/ShaderLib/InPassShadows.glsl b/jme3-core/src/main/resources/Common/ShaderLib/InPassShadows.glsllib
similarity index 100%
rename from jme3-core/src/main/resources/Common/ShaderLib/InPassShadows.glsl
rename to jme3-core/src/main/resources/Common/ShaderLib/InPassShadows.glsllib