diff --git a/apache2/re_operators.c b/apache2/re_operators.c
index dc1de84b..3e50191e 100644
--- a/apache2/re_operators.c
+++ b/apache2/re_operators.c
@@ -37,6 +37,8 @@
 
 #include "libinjection/libinjection.h"
 
+#ifdef WITH_PCRE_STUDY
+#ifdef WITH_PCRE_JIT
 #ifdef WITH_PCRE2
 /**
  * @brief Set the JIT compile return code and JIT compile status.
@@ -54,6 +56,8 @@ static void msc_op_set_jitrc(msc_regex_t *regex, int *rc, int *jit) {
     return;
 }
 #endif
+#endif
+#endif
 
 /**
  *