diff --git a/src/dtblint.c b/src/dtblint.c
index 59cb11f..1947e5e 100644
--- a/src/dtblint.c
+++ b/src/dtblint.c
@@ -79,6 +79,7 @@
 	}
 
 	root = of_unflatten_dtb(fdt);
+	free(fdt);
 	if (IS_ERR(root)) {
 		fprintf(stderr, "failed to unflatten device tree (%ld)\n",
 			PTR_ERR(root));
diff --git a/src/libdt.c b/src/libdt.c
index ded2916..4638678 100644
--- a/src/libdt.c
+++ b/src/libdt.c
@@ -2012,6 +2012,7 @@
 	fdt = read_file("/sys/firmware/fdt", NULL);
 	if (fdt) {
 		root = of_unflatten_dtb(fdt);
+		free(fdt);
 		return root;
 	}