diff --git a/app/code/community/RicardoMartins/PagSeguro/Helper/Data.php b/app/code/community/RicardoMartins/PagSeguro/Helper/Data.php
index 27b4b650..600938cc 100644
--- a/app/code/community/RicardoMartins/PagSeguro/Helper/Data.php
+++ b/app/code/community/RicardoMartins/PagSeguro/Helper/Data.php
@@ -43,6 +43,7 @@ class RicardoMartins_PagSeguro_Helper_Data extends Mage_Core_Helper_Abstract
     const XML_PATH_JSDELIVR_MINIFY                      = 'payment/rm_pagseguro/jsdelivr_minify';
     const XML_PATH_STC_MIRROR                      = 'payment/rm_pagseguro/stc_mirror';
     const XML_PATH_PAYMENT_PAGSEGURO_CC_MULTICC_ACTIVE  = 'payment/rm_pagseguro_cc/multicc_active';
+    const MAX_ALLOWED_NOINTERESTINSTALLMENTQUANTITY = 18; //PagSeguro limitation
 
     /**
      * Returns session ID from PagSeguro that will be used on JavaScript methods.
@@ -674,6 +675,12 @@ public function getMaxInstallmentsNoInterest($amount)
         $selectedMaxInstallmentNoInterest = $amount / $freeAmt;
         $selectedMaxInstallmentNoInterest = (int)floor($selectedMaxInstallmentNoInterest);
         
+        //prevents internal server error from PagSeguro when receiving a value > 18
+        $selectedMaxInstallmentNoInterest = min(
+            $selectedMaxInstallmentNoInterest,
+            self::MAX_ALLOWED_NOINTERESTINSTALLMENTQUANTITY
+        );
+        
         return ($selectedMaxInstallmentNoInterest > 1) ? $selectedMaxInstallmentNoInterest : false; //prevents 0 or 1
     }
 }
\ No newline at end of file
diff --git a/app/code/community/RicardoMartins/PagSeguro/etc/config.xml b/app/code/community/RicardoMartins/PagSeguro/etc/config.xml
index c95469d3..d3c46f72 100644
--- a/app/code/community/RicardoMartins/PagSeguro/etc/config.xml
+++ b/app/code/community/RicardoMartins/PagSeguro/etc/config.xml
@@ -2,7 +2,7 @@
 <config>
     <modules>
         <RicardoMartins_PagSeguro>
-            <version>3.15.3</version>
+            <version>3.15.4</version>
         </RicardoMartins_PagSeguro>
     </modules>
     <global>