diff --git a/source/Plugins/Instruction/ARM/EmulateInstructionARM.cpp b/source/Plugins/Instruction/ARM/EmulateInstructionARM.cpp
index 4d96870..74fc534 100644
--- a/source/Plugins/Instruction/ARM/EmulateInstructionARM.cpp
+++ b/source/Plugins/Instruction/ARM/EmulateInstructionARM.cpp
@@ -150,6 +150,7 @@
                                             dwarf_r0 + n, 
                                             0 };
 
+    bool success;
     uint32_t data = ReadRegisterUnsigned (eRegisterKindDWARF, dwarf_r0 + n, 0, &success);
                   
     if (!success)