diff --git a/satip.c b/satip.c
index c3652c1..d84ced2 100644
--- a/satip.c
+++ b/satip.c
@@ -16,7 +16,7 @@
 #include "setup.h"
 
 #if defined(LIBCURL_VERSION_NUM) && LIBCURL_VERSION_NUM < 0x072400
-#warning "CURL version >= 7.36.0 is recommended"
+#error "CURL version >= 7.36.0 is required"
 #endif
 
 #if defined(APIVERSNUM) && APIVERSNUM < 20200