diff --git a/lib/index.js b/lib/index.js
index d12c53d..ebf2a77 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -537,16 +537,22 @@ exports.init = function init(args, callback) {
         };
 
         const checkForOnlyAllow = (currentLicense, packageName) => {
-            if (!Array.isArray(toCheckforOnlyAllow) || toCheckforOnlyAllow.length === 0) {
-                return;
-            }
+            if (toCheckforOnlyAllow.length > 0) {
+                let hasOnlyAllowedPackages = false;
 
-            if (!toCheckforOnlyAllow.includes(currentLicense)) {
-                console.error(
-                    `Package "${packageName}" is licensed under "${currentLicense}" which is not permitted by the --onlyAllow flag. Exiting.`,
-                );
+                toCheckforOnlyAllow.forEach((allowedLicense) => {
+                    if (currentLicense.indexOf(allowedLicense) >= 0) {
+                        hasOnlyAllowedPackages = true;
+                    }
+                });
 
-                process.exit(1);
+                if (!hasOnlyAllowedPackages) {
+                    console.error(
+                        `Package "${packageName}" is licensed under "${currentLicense}" which is not permitted by the --onlyAllow flag. Exiting.`,
+                    );
+
+                    process.exit(1);
+                }
             }
         };