--- dyld/dyld-46.16/src/dyld.cpp
+++ dyld/dyld-46.9/src/dyld.cpp
@@ -1054,6 +1054,7 @@
 						return true;
 					}
 					break;
+#ifdef CPU_TYPE_X86_64
 				case CPU_TYPE_X86_64:
 					if ( (cpu_subtype_t)OSSwapBigToHostInt32(archs[i].cpusubtype) == CPU_SUBTYPE_X86_64_ALL ) {
 						*offset = OSSwapBigToHostInt32(archs[i].offset);
@@ -1061,6 +1062,7 @@
 						return true;
 					}
 					break;
+#endif
 			}
 		}
 	}
@@ -1140,10 +1142,12 @@
 					if ( mh->cpusubtype == CPU_SUBTYPE_I386_ALL ) 
 						return true;
 					break;					
+#ifdef CPU_TYPE_X86_64
 				case CPU_TYPE_X86_64:
 					if ( mh->cpusubtype == CPU_SUBTYPE_X86_64_ALL ) 
  						return true;
 					break;		
+#endif
 			}
 		}
 	}