diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c4f0328..59d4058 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
   ubuntu:
     strategy:
       matrix:
-          version: ['7.3.', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
+          version: ['7.3.', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.5']
     runs-on: ubuntu-latest
     services:
       ibm_db2:
@@ -104,7 +104,7 @@ jobs:
         shell: cmd
     strategy:
       matrix:
-          version: ["8.1", "8.2", "8.3", "8.4"]
+          version: ["8.1", "8.2", "8.3", "8.4", "8.5"]
           arch: [x64]
           ts: [ts]
     runs-on: windows-latest
diff --git a/ibm_db2.c b/ibm_db2.c
index 5ee0c5c..f9d1ba5 100644
--- a/ibm_db2.c
+++ b/ibm_db2.c
@@ -4289,7 +4289,7 @@ static int _php_db2_bind_pad(param_node *curr, int nullterm, int isvarying, int
      * each string (or atom) is allocated once and never changed (immutable)
      * aka, not useful for INOUT and OUT parameters obviously
      */
-    if (IS_INTERNED(Z_STR_P(*data))) {
+    if (ZSTR_IS_INTERNED(Z_STR_P(*data))) {
 		/* Need use macro assignment to avoid leak in php 7. (Thanks Dimitry) 
 		 * Z_STR_P(*data) = zend_string_init(Z_STRVAL_P(*data), Z_STRLEN_P(*data), 0);
 		 */