diff --git a/Core/debugger.c b/Core/debugger.c
index 2cc49ab..fd292b7 100644
--- a/Core/debugger.c
+++ b/Core/debugger.c
@@ -226,7 +226,6 @@ static value_t read_lvalue(GB_gameboy_t *gb, lvalue_t lvalue)
             return VALUE_16(GB_read_memory(gb, lvalue.memory_address.value) |
                             (GB_read_memory(gb, lvalue.memory_address.value + 1) * 0x100));
 
-
         case LVALUE_REG16:
             return VALUE_16(*lvalue.register_address);
 
@@ -236,6 +235,8 @@ static value_t read_lvalue(GB_gameboy_t *gb, lvalue_t lvalue)
         case LVALUE_REG_H:
             return VALUE_16(*lvalue.register_address >> 8);
     }
+
+    return VALUE_16(0);
 }
 
 static void write_lvalue(GB_gameboy_t *gb, lvalue_t lvalue, uint16_t value)