diff --git a/disassembler/disassembler_arm.cc b/disassembler/disassembler_arm.cc
index 54e7761..6f8e08b 100644
--- a/disassembler/disassembler_arm.cc
+++ b/disassembler/disassembler_arm.cc
@@ -82,14 +82,14 @@
 
 void DisassemblerArm::DumpMemoryDomain(std::ostream& os, uint32_t domain) {
   switch (domain) {
-    case 0b1111: os << "sy"; break;
-    case 0b1110: os << "st"; break;
-    case 0b1011: os << "ish"; break;
-    case 0b1010: os << "ishst"; break;
-    case 0b0111: os << "nsh"; break;
-    case 0b0110: os << "nshst"; break;
-    case 0b0011: os << "osh"; break;
-    case 0b0010: os << "oshst"; break;
+    case 15U /* 0b1111 */: os << "sy"; break;
+    case 14U /* 0b1110 */: os << "st"; break;
+    case 11U /* 0b1011 */: os << "ish"; break;
+    case 10U /* 0b1010 */: os << "ishst"; break;
+    case  7U /* 0b0111 */: os << "nsh"; break;
+    case  6U /* 0b0110 */: os << "nshst"; break;
+    case  3U /* 0b0011 */: os << "osh"; break;
+    case  2U /* 0b0010 */: os << "oshst"; break;
   }
 }
 
@@ -269,7 +269,7 @@
         uint32_t op = (instruction >> 21) & 0xf;
         opcode = kDataProcessingOperations[op];
         bool implicit_s = ((op & ~3) == 8);  // TST, TEQ, CMP, and CMN.
-        bool is_mov = op == 0b1101 || op == 0b1111;
+        bool is_mov = op == 13U /* 0b1101 */ || op == 15U /* 0b1111 */;
         if (is_mov) {
           // Show only Rd and Rm.
           if (s) {