diff --git a/jlink_spi.c b/jlink_spi.c
index beabe63..b234b0e 100644
--- a/jlink_spi.c
+++ b/jlink_spi.c
@@ -195,7 +195,7 @@
 	return 0;
 }
 
-static int jlink_spi_init(void)
+static int jlink_spi_init(struct flashprog_programmer *const prog)
 {
 	char *arg;
 	unsigned long speed = 0;