diff --git a/packages/shader-shaderlab/src/shaders/shadingPBR/BRDF.glsl b/packages/shader-shaderlab/src/shaders/shadingPBR/BRDF.glsl
index b885e33d34..863e1ce0b0 100644
--- a/packages/shader-shaderlab/src/shaders/shadingPBR/BRDF.glsl
+++ b/packages/shader-shaderlab/src/shaders/shadingPBR/BRDF.glsl
@@ -55,8 +55,8 @@ struct SurfaceData{
     #endif
 
     #ifdef MATERIAL_ENABLE_IRIDESCENCE
-        float iridesceceIOR;
-        float iridesceceFactor;
+        float iridescenceIOR;
+        float iridescenceFactor;
         float iridescenceThickness;
     #endif
 
@@ -222,7 +222,7 @@ vec3 BRDF_Specular_GGX(vec3 incidentDirection, SurfaceData surfaceData, BRDFData
 
     vec3 F = F_Schlick( specularColor, dotLH );
     #ifdef MATERIAL_ENABLE_IRIDESCENCE
-        F = mix(F, brdfData.iridescenceSpecularColor, surfaceData.iridesceceFactor);
+        F = mix(F, brdfData.iridescenceSpecularColor, surfaceData.iridescenceFactor);
     #endif
 	
 
@@ -404,7 +404,7 @@ void initBRDFData(SurfaceData surfaceData, out BRDFData brdfData){
 
     #ifdef MATERIAL_ENABLE_IRIDESCENCE
         float topIOR = 1.0;
-        brdfData.iridescenceSpecularColor = evalIridescenceSpecular(topIOR, surfaceData.dotNV, surfaceData.iridesceceIOR, brdfData.specularColor, surfaceData.iridescenceThickness);   
+        brdfData.iridescenceSpecularColor = evalIridescenceSpecular(topIOR, surfaceData.dotNV, surfaceData.iridescenceIOR, brdfData.specularColor, surfaceData.iridescenceThickness);   
     #endif
 
     #ifdef MATERIAL_ENABLE_SHEEN
diff --git a/packages/shader-shaderlab/src/shaders/shadingPBR/FragmentPBR.glsl b/packages/shader-shaderlab/src/shaders/shadingPBR/FragmentPBR.glsl
index db2bad2a07..a836098839 100644
--- a/packages/shader-shaderlab/src/shaders/shadingPBR/FragmentPBR.glsl
+++ b/packages/shader-shaderlab/src/shaders/shadingPBR/FragmentPBR.glsl
@@ -278,8 +278,8 @@ SurfaceData getSurfaceData(Varyings v, vec2 aoUV, bool isFrontFacing){
 
     //Iridescence
     #ifdef MATERIAL_ENABLE_IRIDESCENCE
-        surfaceData.iridesceceFactor = material_IridescenceInfo.x;
-        surfaceData.iridesceceIOR = material_IridescenceInfo.y;
+        surfaceData.iridescenceFactor = material_IridescenceInfo.x;
+        surfaceData.iridescenceIOR = material_IridescenceInfo.y;
 
         #ifdef MATERIAL_HAS_IRIDESCENCE_THICKNESS_TEXTURE
            float iridescenceThicknessWeight = texture2D( material_IridescenceThicknessTexture, uv).g;
@@ -289,7 +289,7 @@ SurfaceData getSurfaceData(Varyings v, vec2 aoUV, bool isFrontFacing){
         #endif
        
         #ifdef MATERIAL_HAS_IRIDESCENCE_TEXTURE
-           surfaceData.iridesceceFactor *= texture2D( material_IridescenceTexture, uv).r;
+           surfaceData.iridescenceFactor *= texture2D( material_IridescenceTexture, uv).r;
         #endif
     #endif
 
diff --git a/packages/shader-shaderlab/src/shaders/shadingPBR/LightIndirectPBR.glsl b/packages/shader-shaderlab/src/shaders/shadingPBR/LightIndirectPBR.glsl
index d1e279d018..62be295d7a 100644
--- a/packages/shader-shaderlab/src/shaders/shadingPBR/LightIndirectPBR.glsl
+++ b/packages/shader-shaderlab/src/shaders/shadingPBR/LightIndirectPBR.glsl
@@ -71,7 +71,7 @@ void evaluateSpecularIBL(Varyings varyings, SurfaceData surfaceData, BRDFData br
     vec3 radiance = getLightProbeRadiance(surfaceData, surfaceData.normal, brdfData.roughness);
   
     #ifdef MATERIAL_ENABLE_IRIDESCENCE
-        vec3 speculaColor = mix(brdfData.specularColor, brdfData.iridescenceSpecularColor, surfaceData.iridesceceFactor);
+        vec3 speculaColor = mix(brdfData.specularColor, brdfData.iridescenceSpecularColor, surfaceData.iridescenceFactor);
     #else
         vec3 speculaColor = brdfData.specularColor;
     #endif