diff --git a/src/gfx_layout.cpp b/src/gfx_layout.cpp
index 861f390a9d..4148d05489 100644
--- a/src/gfx_layout.cpp
+++ b/src/gfx_layout.cpp
@@ -282,7 +282,7 @@ ParagraphLayout::Line *ParagraphLayout::nextLine(int max_width)
 	Line *l = new Line();
 
 	const WChar *begin = this->buffer;
-	WChar *last_space;
+	WChar *last_space = NULL;
 	const WChar *last_char = begin;
 	int width = 0;