diff --git a/engine/src/core-data/Common/MatDefs/Light/Lighting.j3md b/engine/src/core-data/Common/MatDefs/Light/Lighting.j3md
index ae9d7705c..ed4e67670 100644
--- a/engine/src/core-data/Common/MatDefs/Light/Lighting.j3md
+++ b/engine/src/core-data/Common/MatDefs/Light/Lighting.j3md
@@ -15,7 +15,7 @@ MaterialDef Phong Lighting {
         // Output alpha from the diffuse map
         Boolean UseAlpha
 
-        // Apha threshold for fragment discarding
+        // Alpha threshold for fragment discarding
         Float AlphaDiscardThreshold (AlphaTestFallOff)
 
         // Normal map is in BC5/ATI2n/LATC/3Dc compression format
diff --git a/engine/src/core-data/Common/MatDefs/Misc/Unshaded.j3md b/engine/src/core-data/Common/MatDefs/Misc/Unshaded.j3md
index 4c7247ea8..460ad4ed1 100644
--- a/engine/src/core-data/Common/MatDefs/Misc/Unshaded.j3md
+++ b/engine/src/core-data/Common/MatDefs/Misc/Unshaded.j3md
@@ -16,7 +16,7 @@ MaterialDef Unshaded {
         Int NumberOfBones
         Matrix4Array BoneMatrices
 
-        // Apha threshold for fragment discarding
+        // Alpha threshold for fragment discarding
         Float AlphaDiscardThreshold (AlphaTestFallOff)
 
         //Shadows