diff --git a/src/common/torgzip.h b/src/common/torgzip.h
index 6c88f69275..4a7c205788 100644
--- a/src/common/torgzip.h
+++ b/src/common/torgzip.h
@@ -14,12 +14,12 @@ typedef enum { GZIP_METHOD=1, ZLIB_METHOD=2 } compress_method_t;
 
 int
 tor_gzip_compress(char **out, size_t *out_len,
-		  const char *in, size_t in_len,
-		  compress_method_t method);
+                  const char *in, size_t in_len,
+                  compress_method_t method);
 int
 tor_gzip_uncompress(char **out, size_t *out_len,
-		    const char *in, size_t in_len,
-		    compress_method_t method);
+                    const char *in, size_t in_len,
+                    compress_method_t method);
 
 int is_gzip_supported(void);