diff --git a/customers/base/apache-php-configmap.yml b/customers/base/apache-php-configmap.yml
index 6155bb8..5802cc9 100644
--- a/customers/base/apache-php-configmap.yml
+++ b/customers/base/apache-php-configmap.yml
@@ -153,7 +153,7 @@ data:
     [dba]
     ; Nothing here
     [opcache]
-    ; Nothing here
+    opcache.interned_strings_buffer=128
     [curl]
     ; Nothing here
     [openssl]
diff --git a/customers/base/cli-php-configmap.yml b/customers/base/cli-php-configmap.yml
index 73b995c..59923b2 100644
--- a/customers/base/cli-php-configmap.yml
+++ b/customers/base/cli-php-configmap.yml
@@ -153,7 +153,7 @@ data:
     [dba]
     ; Nothing here
     [opcache]
-    ; Nothing here
+    opcache.interned_strings_buffer=128
     [curl]
     ; Nothing here
     [openssl]