diff --git a/arc4random.c b/arc4random.c
index 254c12b6..fc2c97bc 100644
--- a/arc4random.c
+++ b/arc4random.c
@@ -167,7 +167,7 @@ arc4_seed_win32(void)
 }
 #endif
 
-#if defined(_EVENT_HAVE_SYS_SYSCTL_H)
+#if defined(_EVENT_HAVE_SYS_SYSCTL_H) && defined(_EVENT_HAVE_SYSCTL)
 #if _EVENT_HAVE_DECL_CTL_KERN && _EVENT_HAVE_DECL_KERN_RANDOM && _EVENT_HAVE_DECL_RANDOM_UUID
 #define TRY_SEED_SYSCTL_LINUX
 static int
diff --git a/configure.in b/configure.in
index 14a0936f..8a9211d4 100644
--- a/configure.in
+++ b/configure.in
@@ -332,6 +332,7 @@ AC_CHECK_FUNCS([ \
   strsep \
   strtok_r \
   strtoll \
+  sysctl \
   unsetenv \
   vasprintf \
 ])