diff --git a/src/filters/colormatrix/ColorMatrixFilter.js b/src/filters/colormatrix/ColorMatrixFilter.js
index 5ef6af8..e6fde6e 100644
--- a/src/filters/colormatrix/ColorMatrixFilter.js
+++ b/src/filters/colormatrix/ColorMatrixFilter.js
@@ -37,7 +37,7 @@
             0, 0, 1, 0, 0,
             0, 0, 0, 1, 0];
 
-        this.interpolation = 1;
+        this.alpha = 1;
     }
 
     /**
@@ -579,7 +579,7 @@
     }
 
     /**
-     * The interpolation value to use when mixing the original and resultant colors.
+     * The opacity value to use when mixing the original and resultant colors.
      *
      * When the value is 0, the original color is used without modification.
      * When the value is 1, the result color is used.
@@ -588,14 +588,14 @@
      * @member {number}
      * @default 1
      */
-    get interpolation()
+    get alpha()
     {
-        return this.uniforms.uInterpolation;
+        return this.uniforms.uAlpha;
     }
 
-    set interpolation(value) // eslint-disable-line require-jsdoc
+    set alpha(value) // eslint-disable-line require-jsdoc
     {
-        this.uniforms.uInterpolation = value;
+        this.uniforms.uAlpha = value;
     }
 }
 

diff --git a/src/filters/colormatrix/ColorMatrixFilter.js b/src/filters/colormatrix/ColorMatrixFilter.js
index 5ef6af8..e6fde6e 100644
--- a/src/filters/colormatrix/ColorMatrixFilter.js
+++ b/src/filters/colormatrix/ColorMatrixFilter.js
@@ -37,7 +37,7 @@
             0, 0, 1, 0, 0,
             0, 0, 0, 1, 0];
 
-        this.interpolation = 1;
+        this.alpha = 1;
     }
 
     /**
@@ -579,7 +579,7 @@
     }
 
     /**
-     * The interpolation value to use when mixing the original and resultant colors.
+     * The opacity value to use when mixing the original and resultant colors.
      *
      * When the value is 0, the original color is used without modification.
      * When the value is 1, the result color is used.
@@ -588,14 +588,14 @@
      * @member {number}
      * @default 1
      */
-    get interpolation()
+    get alpha()
     {
-        return this.uniforms.uInterpolation;
+        return this.uniforms.uAlpha;
     }
 
-    set interpolation(value) // eslint-disable-line require-jsdoc
+    set alpha(value) // eslint-disable-line require-jsdoc
     {
-        this.uniforms.uInterpolation = value;
+        this.uniforms.uAlpha = value;
     }
 }
 
diff --git a/src/filters/colormatrix/colorMatrix.frag b/src/filters/colormatrix/colorMatrix.frag
index 9729c5a..afca6a9 100644
--- a/src/filters/colormatrix/colorMatrix.frag
+++ b/src/filters/colormatrix/colorMatrix.frag
@@ -1,13 +1,13 @@
 varying vec2 vTextureCoord;
 uniform sampler2D uSampler;
 uniform float m[20];
-uniform float uInterpolation;
+uniform float uAlpha;
 
 void main(void)
 {
     vec4 c = texture2D(uSampler, vTextureCoord);
 
-    if (uInterpolation == 0.0) {
+    if (uAlpha == 0.0) {
         gl_FragColor = c;
         return;
     }
@@ -43,7 +43,7 @@
        result.a += (m[18] * c.a);
        result.a += m[19];
 
-    vec3 rgb = mix(c.rgb, result.rgb, uInterpolation);
+    vec3 rgb = mix(c.rgb, result.rgb, uAlpha);
 
     // Premultiply alpha again.
     rgb *= result.a;