diff --git a/ROPgadget/ropgadget/ropchain/arch/ropmakerx86.py b/ROPgadget/ropgadget/ropchain/arch/ropmakerx86.py
index 90068db..e09b60e 100644
--- a/ROPgadget/ropgadget/ropchain/arch/ropmakerx86.py
+++ b/ROPgadget/ropgadget/ropchain/arch/ropmakerx86.py
@@ -132,6 +132,9 @@ class ROPMakerX86(object):
         if dataAddr % 2 == 0:
             dataAddr += 1
 
+        dataAddrStr = f"{dataAddr:08x}".replace("00", "01")
+        dataAddr = int(dataAddrStr, 16)
+
         print(f"dataAddr = 0x{dataAddr:08x}")
 
         # prepend padding
diff --git a/autoRop.py b/autoRop.py
index b2afe16..4315218 100755
--- a/autoRop.py
+++ b/autoRop.py
@@ -113,3 +113,4 @@ if run:
     print()
     print(f"[ Run Program : ./{exec_file} {rop_file} ]")
     os.execv(exec_file, [exec_file, rop_file])
+    
\ No newline at end of file
diff --git a/vuln-programs/null-data-addr/Makefile b/vuln-programs/null-data-addr/Makefile
index abdf6d5..9bd018b 100644
--- a/vuln-programs/null-data-addr/Makefile
+++ b/vuln-programs/null-data-addr/Makefile
@@ -1,2 +1,2 @@
 null-data-addr: null-data-addr.c
-	gcc -fno-stack-protector -m32 -static $^ -o $@ -Tdata 0x080d9100
+	gcc -fno-stack-protector -m32 -static $^ -o $@ -Tdata 0x080f0000