diff --git a/DocSVG.h b/DocSVG.h
index 83cedad..2baa6d9 100644
--- a/DocSVG.h
+++ b/DocSVG.h
@@ -69,7 +69,7 @@
 			m_values[i] *= a_scale;
 	}
 
-	void output(HPDF_Page page, float curPos[2], bool fill, PathOperation prevOp, float pathStartPos[2]) {
+    void output(HPDF_Page page, float curPos[2], bool /*fill*/, PathOperation prevOp, float pathStartPos[2]) {
 		float pageHeight = HPDF_Page_GetHeight(page);
 		float x = m_values[0];
 		float y = m_values[1];