diff --git a/src/xenia/kernel/xam_user.cc b/src/xenia/kernel/xam_user.cc
index e1e015222..49cc87658 100644
--- a/src/xenia/kernel/xam_user.cc
+++ b/src/xenia/kernel/xam_user.cc
@@ -53,7 +53,68 @@ SHIM_CALL XamUserGetSigninState_shim(
 }
 
 
-// XamUserReadProfileSettings
+// http://freestyledash.googlecode.com/svn/trunk/Freestyle/Tools/Generic/xboxtools.cpp
+SHIM_CALL XamUserReadProfileSettings_shim(
+    PPCContext* ppc_state, KernelState* state) {
+  uint32_t title_id = SHIM_GET_ARG_32(0);
+  uint32_t user_index = SHIM_GET_ARG_32(1);
+  uint32_t unk_0 = SHIM_GET_ARG_32(2);
+  uint32_t unk_1 = SHIM_GET_ARG_32(3);
+  uint32_t setting_count = SHIM_GET_ARG_32(4);
+  uint32_t setting_ids_ptr = SHIM_GET_ARG_32(5);
+  uint32_t buffer_size_ptr = SHIM_GET_ARG_32(6);
+  uint32_t buffer_ptr = SHIM_GET_ARG_32(7);
+  // arg8 is in stack!
+  uint64_t sp = ppc_state->r[1];
+  uint32_t overlapped_ptr = SHIM_MEM_32(sp - 16);
+
+  uint32_t buffer_size = SHIM_MEM_32(buffer_size_ptr);
+
+  XELOGD(
+      "XamUserReadProfileSettings(%d, %d, %d, %d, %d, %.8X, %.8X(%d), %.8X, %.8X)",
+      title_id, user_index, unk_0, unk_1, setting_count, setting_ids_ptr,
+      buffer_size_ptr, buffer_size, buffer_ptr, overlapped_ptr);
+
+  // Title ID = 0 means us.
+  XEASSERTZERO(title_id);
+
+  // TODO(benvanik): implement overlapped support
+  XEASSERTZERO(overlapped_ptr);
+
+  // First call asks for size (fill buffer_size_ptr).
+  // Second call asks for buffer contents with that size.
+
+  // Result buffer is:
+  // uint32_t setting_count
+  // [repeated X_USER_PROFILE_SETTING structs]
+
+  typedef union {
+    struct {
+      uint32_t id : 14;
+      uint32_t unk : 2;
+      uint32_t size : 12;
+      uint32_t type : 4;
+    };
+    uint32_t value;
+  } x_profile_setting_t;
+
+  // Compute sizes.
+  uint32_t size_needed = 4;
+  for (uint32_t n = 0; n < setting_count; n++) {
+    x_profile_setting_t setting;
+    setting.value = SHIM_MEM_32(setting_ids_ptr + n * 4);
+    size_needed += setting.size;
+  }
+  SHIM_SET_MEM_32(buffer_size_ptr, size_needed);
+  if (buffer_size < size_needed) {
+    SHIM_SET_RETURN(X_ERROR_INSUFFICIENT_BUFFER);
+    return;
+  }
+
+  // TODO(benvanik): read profile data.
+  // For now, just return signed out.
+  SHIM_SET_RETURN(X_ERROR_NOT_FOUND);
+}
 
 
 }  // namespace kernel
@@ -64,4 +125,5 @@ void xe::kernel::xam::RegisterUserExports(
     ExportResolver* export_resolver, KernelState* state) {
   SHIM_SET_MAPPING("xam.xex", XamUserGetXUID, state);
   SHIM_SET_MAPPING("xam.xex", XamUserGetSigninState, state);
+  SHIM_SET_MAPPING("xam.xex", XamUserReadProfileSettings, state);
 }
diff --git a/src/xenia/xbox.h b/src/xenia/xbox.h
index 8e679192e..6f1d23d50 100644
--- a/src/xenia/xbox.h
+++ b/src/xenia/xbox.h
@@ -54,11 +54,13 @@ typedef uint32_t X_STATUS;
 // Adding as needed.
 typedef uint32_t X_RESULT;
 #define X_ERROR_SUCCESS                                 ((uint32_t)0x00000000L)
-#define X_ERROR_ACCESS_DENIED                           ((uint32_t)0x80070005L)
-#define X_ERROR_BAD_ARGUMENTS                           ((uint32_t)0x800700A0L)
-#define X_ERROR_BUSY                                    ((uint32_t)0x800700AAL)
-#define X_ERROR_DEVICE_NOT_CONNECTED                    ((uint32_t)0x8007048FL)
-#define X_ERROR_CANCELLED                               ((uint32_t)0x800704C7L)
+#define X_ERROR_ACCESS_DENIED                           ((uint32_t)0x00000005L)
+#define X_ERROR_INSUFFICIENT_BUFFER                     ((uint32_t)0x0000007AL)
+#define X_ERROR_BAD_ARGUMENTS                           ((uint32_t)0x000000A0L)
+#define X_ERROR_BUSY                                    ((uint32_t)0x000000AAL)
+#define X_ERROR_DEVICE_NOT_CONNECTED                    ((uint32_t)0x0000048FL)
+#define X_ERROR_NOT_FOUND                               ((uint32_t)0x00000490L)
+#define X_ERROR_CANCELLED                               ((uint32_t)0x000004C7L)
 #define X_ERROR_EMPTY                                   ((uint32_t)0x000010D2L)
 
 // MEM_*, used by NtAllocateVirtualMemory