diff --git a/engines/chef/parser/core.ts b/engines/chef/parser/core.ts
index 12b11ae..e54082a 100644
--- a/engines/chef/parser/core.ts
+++ b/engines/chef/parser/core.ts
@@ -66,13 +66,13 @@ const parseArithmeticOp = (line: string): C.ChefArithmeticOp => {
   )
     return { code, ing: matches[2], bowlId };
 
-  throw new SyntaxError("Malformed instruction");
+  throw new SyntaxError("Instruction has incorrect syntax");
 };
 
 /** Assert that a line matches the given regex and return matches */
 const assertMatch = (line: string, regex: RegExp): RegExpMatchArray => {
   const matches = line.match(regex);
-  if (!matches) throw new SyntaxError("Malformed instruction");
+  if (!matches) throw new SyntaxError("Unknown instruction");
   return matches;
 };
 
diff --git a/engines/chef/parser/index.ts b/engines/chef/parser/index.ts
index 4f60879..3be597d 100644
--- a/engines/chef/parser/index.ts
+++ b/engines/chef/parser/index.ts
@@ -117,7 +117,7 @@ const parseCookingTime = (stack: CodeStack): void => {
   const regex = /^Cooking time: \d+ (?:hours?|minutes?).$/;
   const { line, row } = popCodeStack(stack, true);
   if (!line!.match(regex))
-    throw new ParseError("Malformed cooking time statement", { line: row });
+    throw new ParseError("Invalid cooking time statement", { line: row });
 };
 
 /** Parse stack for oven setting statement. No data is returned. */
@@ -126,7 +126,7 @@ const parseOvenSetting = (stack: CodeStack): void => {
     /^Pre-heat oven to \d+ degrees Celsius(?: \(gas mark [\d/]+\))?.$/;
   const { line, row } = popCodeStack(stack, true);
   if (!line!.match(regex))
-    throw new ParseError("Malformed oven setting", { line: row });
+    throw new ParseError("Invalid oven setting statement", { line: row });
 };
 
 /** Parse the stack for the header of method section */