diff --git a/lib/libalpm/diskspace.c b/lib/libalpm/diskspace.c
index f0d1499d..8a2157f3 100644
--- a/lib/libalpm/diskspace.c
+++ b/lib/libalpm/diskspace.c
@@ -111,6 +111,10 @@ static alpm_list_t *mount_point_list(alpm_handle_t *handle)
 	}
 
 	while((mnt = getmntent(fp))) {
+		if(mnt->mnt_dir == NULL) {
+			continue;
+		}
+
 		CALLOC(mp, 1, sizeof(alpm_mountpoint_t), RET_ERR(handle, ALPM_ERR_MEMORY, NULL));
 		STRDUP(mp->mount_dir, mnt->mnt_dir, free(mp); RET_ERR(handle, ALPM_ERR_MEMORY, NULL));
 		mp->mount_dir_len = strlen(mp->mount_dir);
@@ -134,6 +138,10 @@ static alpm_list_t *mount_point_list(alpm_handle_t *handle)
 	}
 
 	while((ret = getmntent(fp, &mnt)) == 0) {
+		if(mnt->mnt_mountp == NULL) {
+			continue;
+		}
+
 		CALLOC(mp, 1, sizeof(alpm_mountpoint_t), RET_ERR(handle, ALPM_ERR_MEMORY, NULL));
 		STRDUP(mp->mount_dir, mnt->mnt_mountp,  free(mp); RET_ERR(handle, ALPM_ERR_MEMORY, NULL));
 		mp->mount_dir_len = strlen(mp->mount_dir);
@@ -161,6 +169,10 @@ static alpm_list_t *mount_point_list(alpm_handle_t *handle)
 	}
 
 	for(; entries-- > 0; fsp++) {
+		if(fsp->f_mntonname == NULL) {
+			continue;
+		}
+
 		CALLOC(mp, 1, sizeof(alpm_mountpoint_t), RET_ERR(handle, ALPM_ERR_MEMORY, NULL));
 		STRDUP(mp->mount_dir, fsp->f_mntonname, free(mp); RET_ERR(handle, ALPM_ERR_MEMORY, NULL));
 		mp->mount_dir_len = strlen(mp->mount_dir);