diff --git a/src/emu/video/rgbvmx.h b/src/emu/video/rgbvmx.h
index 95a7d45531c..0c9ca32d47e 100644
--- a/src/emu/video/rgbvmx.h
+++ b/src/emu/video/rgbvmx.h
@@ -32,7 +32,7 @@ public:
 	inline rgbaint_t(UINT32 rgba) { set(rgba); }
 	inline rgbaint_t(INT32 a, INT32 r, INT32 g, INT32 b) { set(a, r, g, b); }
 	inline rgbaint_t(rgb_t& rgb) { set(rgb); }
-	inline rgbaint_t(VECS32 rgba) m_value(rgba) { }
+	inline rgbaint_t(VECS32 rgba) : m_value(rgba) { }
 
 	inline void set(rgbaint_t& other) { m_value = other.m_value; }