diff --git a/magick/geometry.h b/magick/geometry.h
index cca2b1e..86268fd 100644
--- a/magick/geometry.h
+++ b/magick/geometry.h
@@ -48,11 +48,11 @@
ChiNegative = 0x0080,
PercentValue = 0x1000,
AspectValue = 0x2000,
- NormalizeValue = 0x2000, /* see ScaleKernelValue() in morphology.c */
+ NormalizeValue = 0x2000, /* see ScaleKernelValue() in morphology.c */
LessValue = 0x4000,
GreaterValue = 0x8000,
MinimumValue = 0x10000,
- CorrelateNormalizeValue = 0x10000, /* see ScaleKernelValue() */
+ CorrelateNormalizeValue = 0x10000, /* see ScaleKernelValue() */
AreaValue = 0x20000,
DecimalValue = 0x40000,
#undef AllValues
diff --git a/magick/morphology.c b/magick/morphology.c
index e9e793e..40a512a 100644
--- a/magick/morphology.c
+++ b/magick/morphology.c
@@ -1761,11 +1761,11 @@
case TopHatMorphology:
case BottomHatMorphology:
/* Get Difference relative to the original image */
- CompositeImageChannel(new_image, channel, DifferenceCompositeOp,
+ (void) CompositeImageChannel(new_image, channel, DifferenceCompositeOp,
image, 0, 0);
break;
case EdgeMorphology: /* subtract the Erode from a Dilate */
- CompositeImageChannel(new_image, channel, DifferenceCompositeOp,
+ (void) CompositeImageChannel(new_image, channel, DifferenceCompositeOp,
grad_image, 0, 0);
grad_image=DestroyImage(grad_image);
break;