diff --git a/tests/05r1-bitmapfile b/tests/05r1-bitmapfile
index e1fc3de..fcd8372 100644
--- a/tests/05r1-bitmapfile
+++ b/tests/05r1-bitmapfile
@@ -33,6 +33,7 @@ mdadm -S $md0
 
 mdadm --assemble -R $md0 --bitmap=$bmf $dev2
 dirty4=`mdadm -X $bmf | sed -n -e 's/.*Bitmap.* \([0-9]*\) dirty.*/\1/p'`
+mdadm --zero $dev1 # force --add, not --re-add
 mdadm $md0 --add $dev1
 #it is too fast# check recovery
 
diff --git a/tests/05r5-bitmapfile b/tests/05r5-bitmapfile
index c753758..6d173d8 100644
--- a/tests/05r5-bitmapfile
+++ b/tests/05r5-bitmapfile
@@ -32,6 +32,7 @@ fi
 mdadm -S $md0
 
 mdadm --assemble -R $md0 --bitmap=$bmf $dev2 $dev3
+mdadm --zero $dev1 # force add, not re-add
 mdadm $md0 --add $dev1
 check recovery
 
diff --git a/tests/05r5-internalbitmap b/tests/05r5-internalbitmap
index 591c9db..13dc592 100644
--- a/tests/05r5-internalbitmap
+++ b/tests/05r5-internalbitmap
@@ -30,6 +30,7 @@ fi
 mdadm -S $md0
 
 mdadm --assemble -R $md0  $dev2 $dev3
+mdadm --zero $dev1 # force --add, not --re-add
 mdadm $md0 --add $dev1
 check recovery
 
diff --git a/tests/05r6-bitmapfile b/tests/05r6-bitmapfile
index 28c590e..d11896d 100644
--- a/tests/05r6-bitmapfile
+++ b/tests/05r6-bitmapfile
@@ -32,6 +32,7 @@ fi
 mdadm -S $md0
 
 mdadm --assemble -R $md0 --bitmap=$bmf $dev1 $dev2 $dev4
+mdadm --zero $dev3 # force --add, not --re-add
 mdadm $md0 --add $dev3
 check recovery