diff --git a/source/row_common.cc b/source/row_common.cc
index afccdb8d6..74c9be87e 100644
--- a/source/row_common.cc
+++ b/source/row_common.cc
@@ -429,12 +429,12 @@ void ARGBToARGB4444Row_C(const uint8_t* src_argb, uint8_t* dst_rgb, int width) {
 void ABGRToAR30Row_C(const uint8_t* src_abgr, uint8_t* dst_ar30, int width) {
   int x;
   for (x = 0; x < width; ++x) {
-    uint32_t b0 = (src_abgr[0] >> 6) | ((uint32_t)(src_abgr[0]) << 2);
+    uint32_t r0 = (src_abgr[0] >> 6) | ((uint32_t)(src_abgr[0]) << 2);
     uint32_t g0 = (src_abgr[1] >> 6) | ((uint32_t)(src_abgr[1]) << 2);
-    uint32_t r0 = (src_abgr[2] >> 6) | ((uint32_t)(src_abgr[2]) << 2);
+    uint32_t b0 = (src_abgr[2] >> 6) | ((uint32_t)(src_abgr[2]) << 2);
     uint32_t a0 = (src_abgr[3] >> 6);
     *(uint32_t*)(dst_ar30) =
-        STATIC_CAST(uint32_t, r0 | (g0 << 10) | (b0 << 20) | (a0 << 30));
+        STATIC_CAST(uint32_t, b0 | (g0 << 10) | (r0 << 20) | (a0 << 30));
     dst_ar30 += 4;
     src_abgr += 4;
   }