diff --git a/sys/dev/ata/chipsets/ata-serverworks.c b/sys/dev/ata/chipsets/ata-serverworks.c
index 8e6e5952eb1a..87fcec3f07e4 100644
--- a/sys/dev/ata/chipsets/ata-serverworks.c
+++ b/sys/dev/ata/chipsets/ata-serverworks.c
@@ -41,6 +41,9 @@ __FBSDID("$FreeBSD$");
 #include <sys/sema.h>
 #include <sys/taskqueue.h>
 #include <vm/uma.h>
+#ifdef __powerpc__
+#include <machine/intr_machdep.h>
+#endif
 #include <machine/stdarg.h>
 #include <machine/resource.h>
 #include <machine/bus.h>
@@ -217,6 +220,10 @@ ata_serverworks_ch_attach(device_t dev)
     ch->hw.tf_write = ata_serverworks_tf_write;
 #ifdef __powerpc__
     ch->hw.status = ata_serverworks_status;
+
+    /* Make sure that our interrupt is edge triggered */
+    powerpc_config_intr(bus_get_resource_start(device_get_parent(dev),
+	SYS_RES_IRQ, 0), INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
 #endif
 
     if (ctlr->chip->chipid == ATA_K2) {