diff --git a/doc/sphinx/user-extensions/syntax-extensions.rst b/doc/sphinx/user-extensions/syntax-extensions.rst
index 0b8006eeeccd..3098a7c3db4f 100644
--- a/doc/sphinx/user-extensions/syntax-extensions.rst
+++ b/doc/sphinx/user-extensions/syntax-extensions.rst
@@ -557,7 +557,7 @@ Enabling and disabling notations
       Cannot enable or disable for parsing a notation that was
       originally defined as only printing.
 
-   .. exn:: Found no matching notation to enable or disable.
+   .. warn:: Found no matching notation to enable or disable.
 
       No previously defined notation satisfies the given constraints.
 
diff --git a/interp/notation.ml b/interp/notation.ml
index 33a5725119d0..a8c231024a48 100644
--- a/interp/notation.ml
+++ b/interp/notation.ml
@@ -2671,6 +2671,11 @@ let toggle_abbreviations ~on found ntn_pattern =
     Abbreviation.toggle_abbreviations ~on ~use:ntn_pattern.use_pattern test
   with Exit -> ()
 
+let warn_nothing_to_enable_or_disable =
+  CWarnings.create ~name:"no-notation-to-enable-or-disable"
+    ~category:CWarnings.CoreCategories.syntax
+    (fun () -> strbrk "Found no matching notation to enable or disable.")
+
 let toggle_notations ~on ~all ?(verbose=true) prglob ntn_pattern =
   let found = ref [] in
   (* Deal with (parsing) notations *)
@@ -2688,8 +2693,7 @@ let toggle_notations ~on ~all ?(verbose=true) prglob ntn_pattern =
   (* Deal with abbreviations *)
   toggle_abbreviations ~on found ntn_pattern;
   match !found with
-  | [] ->
-    user_err (strbrk "Found no matching notation to enable or disable.")
+  | [] -> warn_nothing_to_enable_or_disable ()
   | _::_::_ when not all ->
     user_err (strbrk "More than one interpretation bound to this notation, confirm with the \"all\" modifier.")
   | _ ->
diff --git a/test-suite/output/activation.out b/test-suite/output/activation.out
index 3d64de5d38c7..81997a456483 100644
--- a/test-suite/output/activation.out
+++ b/test-suite/output/activation.out
@@ -5,12 +5,13 @@ modifier.
 File "./output/activation.v", line 12, characters 0-22:
 The command has indeed failed with message:
 No notation provided.
-File "./output/activation.v", line 15, characters 0-24:
+File "./output/activation.v", line 16, characters 0-24:
 The command has indeed failed with message:
 Found no matching notation to enable or disable.
+[no-notation-to-enable-or-disable,syntax,default]
 a
      : Type
-File "./output/activation.v", line 24, characters 11-12:
+File "./output/activation.v", line 26, characters 11-12:
 The command has indeed failed with message:
 The reference a was not found in the current environment.
 Prop
@@ -25,6 +26,7 @@ x
      : bool
 0
      : nat
-File "./output/activation.v", line 44, characters 0-49:
+File "./output/activation.v", line 47, characters 0-49:
 The command has indeed failed with message:
 Found no matching notation to enable or disable.
+[no-notation-to-enable-or-disable,syntax,default]
diff --git a/test-suite/output/activation.v b/test-suite/output/activation.v
index 6b6f16c8e7ca..3513c23a6de5 100644
--- a/test-suite/output/activation.v
+++ b/test-suite/output/activation.v
@@ -12,7 +12,9 @@ Disable Notation (all) : nat_scope.
 Fail Disable Notation.
 
 Module Abbrev.
+Set Warnings "+no-notation-to-enable-or-disable".
 Fail Disable Notation f. (* no abbreviation with such suffix *)
+Set Warnings "no-notation-to-enable-or-disable".
 Notation f w := (S w).
 Disable Notation f w := (S w).
 Enable Notation := (S _).
@@ -41,6 +43,8 @@ End Abbrev.
 Module Bug17782.
 
 Declare Custom Entry trm.
+Set Warnings "+no-notation-to-enable-or-disable".
 Fail Disable Notation "'foo' _"  (in custom trm).
+Set Warnings "no-notation-to-enable-or-disable".
 
 End Bug17782.