diff --git a/sv-parser-pp/src/preprocess.rs b/sv-parser-pp/src/preprocess.rs
index f512b47..062a7b2 100644
--- a/sv-parser-pp/src/preprocess.rs
+++ b/sv-parser-pp/src/preprocess.rs
@@ -1081,6 +1081,22 @@ mod tests {
         };
     } // }}}
 
+    #[test]
+    #[allow(non_snake_case)]
+    fn err_DefineNotFound() { // {{{
+        match preprocess_usualargs("err_DefineNotFound.sv").unwrap_err() {
+            Error::DefineNotFound(identifier) => {
+                assert_eq!(
+                    identifier,
+                    String::from("A")
+                );
+            }
+            _ => {
+                panic!("Error::DefineNotFound not raised.");
+            }
+        };
+    } // }}}
+
     #[test]
     #[allow(non_snake_case)]
     fn IEEE18002017_keywords_if2_13642005() { // {{{
diff --git a/sv-parser-pp/testcases/err_DefineNotFound.sv b/sv-parser-pp/testcases/err_DefineNotFound.sv
new file mode 100644
index 0000000..1ffd213
--- /dev/null
+++ b/sv-parser-pp/testcases/err_DefineNotFound.sv
@@ -0,0 +1,3 @@
+
+`A // Macro called without definition.
+