diff --git a/tests/proofmode_iris.ref b/tests/proofmode_iris.ref
index 35266972179845b2679ae2c5de80b2488a1c72d6..f55643d50f6dde9b8a87cdf3668e2822f6b78b3e 100644
--- a/tests/proofmode_iris.ref
+++ b/tests/proofmode_iris.ref
@@ -269,7 +269,7 @@ Use [iMod (fupd_mask_subseteq E2)] to adjust the mask of your goal to [E2]".
   --------------------------------------□
   WP e {{ _, ∃ n : nat, Φ n }}
 "iInv_WP"
-	 : string
+     : string
 2 goals
   
   hlc : has_lc
@@ -289,7 +289,7 @@ goal 2 is:
  --------------------------------------∗
  WP e @ E ∖ ↑N {{ _, |={E ∖ ↑N}=> ▷ P ∗ True }}
 "iMod_TWP_mask_mismatch"
-	 : string
+     : string
 The command has indeed failed with message:
 Tactic failure: 
 "Goal and eliminated modality must have the same mask.
@@ -299,7 +299,7 @@ Tactic failure:
 "Goal and eliminated modality must have the same mask.
 Use [iApply fupd_twp; iMod (fupd_mask_subseteq E2)] to adjust the mask of your goal to [E2]".
 "iMod_TWP_atomic_mask_mismatch"
-	 : string
+     : string
 The command has indeed failed with message:
 Tactic failure: 
 "Goal and eliminated modality must have the same mask.
@@ -309,7 +309,7 @@ Tactic failure:
 "Goal and eliminated modality must have the same mask.
   Use [iMod (fupd_mask_subseteq E2)] to adjust the mask of your goal to [E2]".
 "iFrame_TWP_no_instantiate"
-	 : string
+     : string
 1 goal
   
   hlc : has_lc
@@ -323,7 +323,7 @@ Tactic failure:
   --------------------------------------□
   WP e [{ _, ∃ n : nat, Φ n }]
 "iInv_TWP"
-	 : string
+     : string
 2 goals
   
   hlc : has_lc