diff --git a/src/nanosvg.h b/src/nanosvg.h
index 0c586161..7d30932a 100644
--- a/src/nanosvg.h
+++ b/src/nanosvg.h
@@ -612,7 +612,7 @@ static void nsvg__curveBounds(float* bounds, float* curve)
 	}
 }
 
-static NSVGparser* nsvg__createParser()
+static NSVGparser* nsvg__createParser(void)
 {
 	NSVGparser* p;
 	p = (NSVGparser*)malloc(sizeof(NSVGparser));
diff --git a/src/nanosvgrast.h b/src/nanosvgrast.h
index 4f6f0a62..cde5d72a 100644
--- a/src/nanosvgrast.h
+++ b/src/nanosvgrast.h
@@ -49,7 +49,7 @@ typedef struct NSVGrasterizer NSVGrasterizer;
 */
 
 // Allocated rasterizer context.
-NSVGrasterizer* nsvgCreateRasterizer();
+NSVGrasterizer* nsvgCreateRasterizer(void);
 
 // Rasterizes SVG image, returns RGBA image (non-premultiplied alpha)
 //   r - pointer to rasterizer context
@@ -152,7 +152,7 @@ struct NSVGrasterizer
 	int width, height, stride;
 };
 
-NSVGrasterizer* nsvgCreateRasterizer()
+NSVGrasterizer* nsvgCreateRasterizer(void)
 {
 	NSVGrasterizer* r = (NSVGrasterizer*)malloc(sizeof(NSVGrasterizer));
 	if (r == NULL) goto error;