diff --git a/protobuf-c.spec b/protobuf-c.spec
index 6fc28f7..a686fb3 100644
--- a/protobuf-c.spec
+++ b/protobuf-c.spec
@@ -7,7 +7,7 @@ Summary:        C bindings for Google's Protocol Buffers
 Group:          System Environment/Libraries
 License:        BSD
 URL:            https://github.com/protobuf-c/protobuf-c
-Source0:	https://github.com/protobuf-c/protobuf-c/releases/download/v%{version}/%{name}-%{version}.tar.gz
+Source0:        https://github.com/protobuf-c/protobuf-c/releases/download/v%{version}/%{name}-%{version}.tar.gz
 
 BuildRequires:  autoconf automake libtool protobuf-devel