diff --git a/agent/php_wrapper.c b/agent/php_wrapper.c
index b00935da5..6a3ee536d 100644
--- a/agent/php_wrapper.c
+++ b/agent/php_wrapper.c
@@ -25,8 +25,8 @@ nruserfn_t* nr_php_wrap_user_function_before_after_clean_with_transience(
 
   /* If any of the callbacks we are attempting to set are already set to
    * something else, we want to exit without setting new callbacks */
-  if (is_instrumentation_set(wraprec->special_instrumentation,
-                             after_callback)) {
+  if (is_instrumentation_set_and_not_equal(wraprec->special_instrumentation,
+                                           after_callback)) {
     nrl_verbosedebug(
         NRL_INSTRUMENT,
         "%s: attempting to set special_instrumentation for %.*s, but "
@@ -35,8 +35,8 @@ nruserfn_t* nr_php_wrap_user_function_before_after_clean_with_transience(
     return wraprec;
   }
 
-  if (is_instrumentation_set(wraprec->special_instrumentation_before,
-                             before_callback)) {
+  if (is_instrumentation_set_and_not_equal(wraprec->special_instrumentation_before,
+                                           before_callback)) {
     nrl_verbosedebug(NRL_INSTRUMENT,
                      "%s: attempting to set special_instrumentation_before "
                      "for %.*s, but "
@@ -45,8 +45,8 @@ nruserfn_t* nr_php_wrap_user_function_before_after_clean_with_transience(
     return wraprec;
   }
 
-  if (is_instrumentation_set(wraprec->special_instrumentation_clean,
-                             clean_callback)) {
+  if (is_instrumentation_set_and_not_equal(wraprec->special_instrumentation_clean,
+                                           clean_callback)) {
     nrl_verbosedebug(NRL_INSTRUMENT,
                      "%s: attempting to set special_instrumentation_clean "
                      "for %.*s, but "
diff --git a/agent/php_wrapper.h b/agent/php_wrapper.h
index 06e5c8e08..5e109efcd 100644
--- a/agent/php_wrapper.h
+++ b/agent/php_wrapper.h
@@ -327,8 +327,9 @@ extern zval** nr_php_get_return_value_ptr(TSRMLS_D);
     was_executed = 1;                                                \
   }
 
-static inline bool is_instrumentation_set(nrspecialfn_t instrumentation,
-                                          nrspecialfn_t callback) {
+static inline bool is_instrumentation_set_and_not_equal(
+    nrspecialfn_t instrumentation,
+    nrspecialfn_t callback) {
   if ((NULL != instrumentation) && (callback != instrumentation)) {
     return true;
   }