diff --git a/lib/Transforms/Instrumentation/MemorySanitizer.cpp b/lib/Transforms/Instrumentation/MemorySanitizer.cpp
index fecf5bedf5a..15a67d7c697 100644
--- a/lib/Transforms/Instrumentation/MemorySanitizer.cpp
+++ b/lib/Transforms/Instrumentation/MemorySanitizer.cpp
@@ -2452,9 +2452,10 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
       }
       // a = select b, c, d
       // Oa = Sb ? Ob : (b ? Oc : Od)
-      setOrigin(&I, IRB.CreateSelect(
-                        Sb, getOrigin(I.getCondition()),
-                        IRB.CreateSelect(B, getOrigin(C), getOrigin(D))));
+      setOrigin(
+          &I, IRB.CreateSelect(Sb, getOrigin(I.getCondition()),
+                               IRB.CreateSelect(B, getOrigin(I.getTrueValue()),
+                                                getOrigin(I.getFalseValue()))));
     }
   }
 
diff --git a/test/Instrumentation/MemorySanitizer/missing_origin.ll b/test/Instrumentation/MemorySanitizer/missing_origin.ll
index 673e85369a3..f7385b9dd4c 100644
--- a/test/Instrumentation/MemorySanitizer/missing_origin.ll
+++ b/test/Instrumentation/MemorySanitizer/missing_origin.ll
@@ -17,3 +17,17 @@ entry:
 ; CHECK: [[A:%.*]] = load i32* {{.*}}@__msan_param_origin_tls,
 ; CHECK: store i32 [[A]], i32* @__msan_retval_origin_tls
 ; CHECK: ret <4 x i32>
+
+
+; Regression test for origin propagation in "select i1, float, float".
+; https://code.google.com/p/memory-sanitizer/issues/detail?id=78
+
+define float @SelectFloat(i1 %b, float %x, float %y) nounwind uwtable sanitize_memory {
+entry:
+  %z = select i1 %b, float %x, float %y
+  ret float %z
+}
+
+; CHECK-LABEL: @SelectFloat(
+; CHECK-NOT: select {{.*}} i32 0, i32 0
+; CHECK: ret float