diff --git a/sys/pc98/cbus/fdc.c b/sys/pc98/cbus/fdc.c
index 01e27befdf8f..5e3aa47bcf57 100644
--- a/sys/pc98/cbus/fdc.c
+++ b/sys/pc98/cbus/fdc.c
@@ -3112,7 +3112,7 @@ fdmisccmd(dev_t dev, u_int cmd, void *data)
 	finfo = (struct fd_formb *)data;
 	idfield = (struct fdc_readid *)data;
 
-	bp = malloc(sizeof(struct bio), M_TEMP, M_ZERO);
+	bp = malloc(sizeof(struct bio), M_TEMP, M_WAITOK | M_ZERO);
 
 	/*
 	 * Set up a bio request for fdstrategy().  bio_blkno is faked
diff --git a/sys/pc98/pc98/fd.c b/sys/pc98/pc98/fd.c
index 01e27befdf8f..5e3aa47bcf57 100644
--- a/sys/pc98/pc98/fd.c
+++ b/sys/pc98/pc98/fd.c
@@ -3112,7 +3112,7 @@ fdmisccmd(dev_t dev, u_int cmd, void *data)
 	finfo = (struct fd_formb *)data;
 	idfield = (struct fdc_readid *)data;
 
-	bp = malloc(sizeof(struct bio), M_TEMP, M_ZERO);
+	bp = malloc(sizeof(struct bio), M_TEMP, M_WAITOK | M_ZERO);
 
 	/*
 	 * Set up a bio request for fdstrategy().  bio_blkno is faked