diff --git a/src/libstrongswan/fips/fips_signer.c b/src/libstrongswan/fips/fips_signer.c
index 1ce021898..36e2ffb42 100644
--- a/src/libstrongswan/fips/fips_signer.c
+++ b/src/libstrongswan/fips/fips_signer.c
@@ -43,7 +43,7 @@ int main(int argc, char* argv[])
 	{
 		exit(1);
 	}
-	fprintf(f, "/* HMAC signature computed over TEXT and RODATA of libstrongswan\n");
+	fprintf(f, "/* SHA-1 HMAC signature computed over TEXT and RODATA of libstrongswan\n");
 	fprintf(f, " *\n");
 	fprintf(f, " * This file has been automatically generated by fips_signer\n");
 	fprintf(f, " * Do not edit manually!\n");
@@ -57,5 +57,6 @@ int main(int argc, char* argv[])
 	fprintf(f, "\n");
 	fprintf(f, "#endif /* FIPS_SIGNATURE_H_ */\n");
 	fclose(f);
+	free(hmac_signature);
 	exit(0);
 }