diff --git a/compiler/optimizing/intrinsics_arm.cc b/compiler/optimizing/intrinsics_arm.cc
index 8234b24..8f64fae 100644
--- a/compiler/optimizing/intrinsics_arm.cc
+++ b/compiler/optimizing/intrinsics_arm.cc
@@ -2613,6 +2613,12 @@
 
 UNIMPLEMENTED_INTRINSIC(ARM, StringStringIndexOf);
 UNIMPLEMENTED_INTRINSIC(ARM, StringStringIndexOfAfter);
+UNIMPLEMENTED_INTRINSIC(ARM, StringBufferAppend);
+UNIMPLEMENTED_INTRINSIC(ARM, StringBufferLength);
+UNIMPLEMENTED_INTRINSIC(ARM, StringBufferToString);
+UNIMPLEMENTED_INTRINSIC(ARM, StringBuilderAppend);
+UNIMPLEMENTED_INTRINSIC(ARM, StringBuilderLength);
+UNIMPLEMENTED_INTRINSIC(ARM, StringBuilderToString);
 
 // 1.8.
 UNIMPLEMENTED_INTRINSIC(ARM, UnsafeGetAndAddInt)