diff --git a/sv-parser-pp/src/preprocess.rs b/sv-parser-pp/src/preprocess.rs
index 062a7b2..91013b1 100644
--- a/sv-parser-pp/src/preprocess.rs
+++ b/sv-parser-pp/src/preprocess.rs
@@ -1097,6 +1097,22 @@ mod tests {
         };
     } // }}}
 
+    #[test]
+    #[allow(non_snake_case)]
+    fn err_DefineArgNotFound() { // {{{
+        match preprocess_usualargs("err_DefineArgNotFound.sv").unwrap_err() {
+            Error::DefineArgNotFound(identifier) => {
+                assert_eq!(
+                    identifier,
+                    String::from("c")
+                );
+            }
+            _ => {
+                panic!("Error::DefineArgNotFound not raised.");
+            }
+        };
+    } // }}}
+
     #[test]
     #[allow(non_snake_case)]
     fn IEEE18002017_keywords_if2_13642005() { // {{{
diff --git a/sv-parser-pp/testcases/err_DefineArgNotFound.sv b/sv-parser-pp/testcases/err_DefineArgNotFound.sv
new file mode 100644
index 0000000..c2fe5c0
--- /dev/null
+++ b/sv-parser-pp/testcases/err_DefineArgNotFound.sv
@@ -0,0 +1,5 @@
+/* IEEE1800-2017 Clause 22.5.1 top of page 678
+*/
+`define MACRO1(a=5,b="B",c) $display(a,,b,,c);
+`MACRO1(1) // Macro called without required argument `c`.
+