--- a/sane/version.hpp
+++ b/sane/version.hpp
@@ -37,7 +37,7 @@ extern "C" {                    // neede
 #include <sane/sane.h>
 }
 
-#if !((SANE_MAJOR == SANE_CURRENT_MAJOR) && (SANE_MINOR == 0))
+#if !((SANE_MAJOR == SANE_CURRENT_MAJOR) && (SANE_CURRENT_MINOR == 0))
 #error "SANE installation violates versioning portability constraints."
 #endif
 
