diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c
index 8cb59433c2e7..4a36158c8996 100644
--- a/sys/dev/pci/pci.c
+++ b/sys/dev/pci/pci.c
@@ -1333,8 +1333,10 @@ pci_get_resource(device_t dev, device_t child, int type, int rid,
 	if (!rle)
 		return ENOENT;
 	
-	*startp = rle->start;
-	*countp = rle->count;
+	if (startp)
+		*startp = rle->start;
+	if (countp)
+		*countp = rle->count;
 
 	return 0;
 }
diff --git a/sys/isa/isa_common.c b/sys/isa/isa_common.c
index 42d486e940e7..92027544859b 100644
--- a/sys/isa/isa_common.c
+++ b/sys/isa/isa_common.c
@@ -869,8 +869,10 @@ isa_get_resource(device_t dev, device_t child, int type, int rid,
 	if (!rle)
 		return ENOENT;
 	
-	*startp = rle->start;
-	*countp = rle->count;
+	if (startp)
+		*startp = rle->start;
+	if (countp)
+		*countp = rle->count;
 
 	return 0;
 }
diff --git a/sys/pccard/pccard_nbk.c b/sys/pccard/pccard_nbk.c
index 264b96e28545..b0913633ddb1 100644
--- a/sys/pccard/pccard_nbk.c
+++ b/sys/pccard/pccard_nbk.c
@@ -178,8 +178,10 @@ pccard_get_resource(device_t dev, device_t child, int type, int rid,
 	if (!rle)
 		return ENOENT;
 	
-	*startp = rle->start;
-	*countp = rle->count;
+	if (startp)
+		*startp = rle->start;
+	if (countp)
+		*countp = rle->count;
 
 	return 0;
 }
diff --git a/sys/pci/pci.c b/sys/pci/pci.c
index 8cb59433c2e7..4a36158c8996 100644
--- a/sys/pci/pci.c
+++ b/sys/pci/pci.c
@@ -1333,8 +1333,10 @@ pci_get_resource(device_t dev, device_t child, int type, int rid,
 	if (!rle)
 		return ENOENT;
 	
-	*startp = rle->start;
-	*countp = rle->count;
+	if (startp)
+		*startp = rle->start;
+	if (countp)
+		*countp = rle->count;
 
 	return 0;
 }