diff --git a/src/intel/compiler/brw_opt_register_coalesce.cpp b/src/intel/compiler/brw_opt_register_coalesce.cpp
index d00ea0b8c68..c4b9fff4b52 100644
--- a/src/intel/compiler/brw_opt_register_coalesce.cpp
+++ b/src/intel/compiler/brw_opt_register_coalesce.cpp
@@ -332,7 +332,7 @@ brw_opt_register_coalesce(brw_shader &s)
 
       progress = true;
 
-      for (int i = 0; i < src_size; i++) {
+      for (int i = 0; i < src_size; i += regs_written(mov[i])) {
          if (!mov[i])
             continue;
 
diff --git a/src/intel/compiler/test_opt_register_coalesce.cpp b/src/intel/compiler/test_opt_register_coalesce.cpp
index aa47c082d26..57aa78a4be7 100644
--- a/src/intel/compiler/test_opt_register_coalesce.cpp
+++ b/src/intel/compiler/test_opt_register_coalesce.cpp
@@ -109,3 +109,53 @@ TEST_F(RegisterCoalesceTest, ChangingTemporaryCompoundRegisterNotChangesOriginal
 
    EXPECT_NO_PROGRESS(brw_opt_register_coalesce, bld);
 }
+
+TEST_F(RegisterCoalesceTest, MovWithFlagRegisterWrite)
+{
+   brw_builder bld = make_shader(MESA_SHADER_COMPUTE, 16);
+   brw_builder exp = make_shader(MESA_SHADER_COMPUTE, 16);
+
+   /**
+    *         mul.sat(16)    %789:F,  %787:F, %788:F
+    *         mov.g.f0.0(16) %790:F,  %789:F
+    * (+f0.0) sel(16)        %800:UD, %790:UD, 0u
+    */
+
+   brw_reg src0  = vgrf(bld, exp, BRW_TYPE_F);
+   brw_reg src1  = vgrf(bld, exp, BRW_TYPE_F);
+   brw_reg vgrf0 = vgrf(bld, exp, BRW_TYPE_F);
+   brw_reg vgrf1 = vgrf(bld, exp, BRW_TYPE_F);
+   brw_reg vgrf2 = vgrf(bld, exp, BRW_TYPE_F);
+
+   {
+      brw_inst *mul = bld.MUL(vgrf0, src0, src1);
+      mul->saturate = true;
+
+      brw_inst *mov = bld.MOV(vgrf1, vgrf0);
+      mov->conditional_mod = BRW_CONDITIONAL_G;
+
+      brw_inst *sel = bld.SEL(vgrf2, vgrf1, brw_imm_f(0.0));
+      sel->predicate = BRW_PREDICATE_NORMAL;
+   }
+
+   EXPECT_PROGRESS(brw_opt_register_coalesce, bld);
+
+   /**
+    *         mul.sat(16)    %789:F,  %787:F, %788:F
+    *         mov.g.f0.0(16) null:F,  %789:F
+    * (+f0.0) sel(16)        %800:UD, %789:UD, 0u
+    */
+
+   {
+      brw_inst *mul = exp.MUL(vgrf0, src0, src1);
+      mul->saturate = true;
+
+      brw_inst *mov = exp.MOV(brw_null_reg(), vgrf0);
+      mov->conditional_mod = BRW_CONDITIONAL_G;
+
+      brw_inst *sel = exp.SEL(vgrf2, vgrf0, brw_imm_f(0.0));
+      sel->predicate = BRW_PREDICATE_NORMAL;
+   }
+
+   EXPECT_SHADERS_MATCH(bld, exp);
+}