diff --git a/opter.js b/opter.js
index 32e29a1..0f5f047 100644
--- a/opter.js
+++ b/opter.js
@@ -49,15 +49,11 @@ module.exports = class Opts {
    **/
   requireOption(nameWithDashes, errorMessage=null) {
     const name = stripDashes(nameWithDashes);
-    console.log('req opt name:', name);
     if (name in this.opts) return true;
     if (name in this.synonyms) {
       let syns = this.synonyms[name];
-      console.log('syns', syns);
       let hits = syns.filter(s => s in this.opts ).length;
-      if (hits > 0) {
-        return true;
-      }
+      if (hits > 0) { return true; }
     }
     throw new Error(errorMessage || defaultErrorMessages.missingRequiredOption(nameWithDashes));
   }
@@ -74,10 +70,8 @@ module.exports = class Opts {
    **/
   requireOptionArgument(nameWithDashes, minRequired=1, maxRequired=1, tooFewMessage=null, tooManyMessage=null) {
     let name = stripDashes(nameWithDashes);
-    // FIXME have to check synonyms, too
-    if (name in this.opts) {
-      console.log('type', typeof this.opts[name] === 'boolean');
-      console.log(this.opts[name]);
+
+    const checkArgs = (name) => {
       if (typeof this.opts[name] === 'boolean') {
         throw new Error(tooFewMessage || defaultErrorMessages.missingRequiredArgument(nameWithDashes));
       } else if (this.opts[name].length < minRequired) {
@@ -86,14 +80,21 @@ module.exports = class Opts {
         throw new Error(tooManyMessage || defaultErrorMessages.tooManyArguments(nameWithDashes));
       }
     }
+
+    if (name in this.opts) {
+      checkArgs(this.opts[name]);
+    }
+    if (name in this.synonyms) {
+      const syn = this.synonyms[name].filter(s => s in this.opts )[0];
+      checkArgs(syn);
+    }
     return true;
   }
 
   contains(nameWithDashes) {
     const name = stripDashes(nameWithDashes);
-    console.log('synonyms:', this.synonyms);
     if (name in this.opts) return true;
-    if (name in this.synonyms) return true;
+    if (name in this.synonyms) return true; // FIXME
     return false;
   }
 }
diff --git a/test.js b/test.js
index 85c1265..a8ffe42 100644
--- a/test.js
+++ b/test.js
@@ -10,8 +10,9 @@ const opts = new Opter(process.argv)
 opts.synonymize('-i', '--input');
 opts.synonymize('-d', '--debug');
 opts.requireOption('-i');
-opts.requireOptionArgument('-i');
-console.log('contains', opts.contains('-d'));
+opts.requireOptionArgument('--input');
+console.log('contains --debug', opts.contains('-d'));
+console.log('contains --input', opts.contains('--input'));
 
 // const _defaultErrorMessages = {
 //   missingRequiredOption: (optionName) => `Missing required option '${optionName}'`,