diff --git a/src/sums.d b/src/sums.d
index 788c329..81f26d1 100644
--- a/src/sums.d
+++ b/src/sums.d
@@ -18,7 +18,6 @@
 import std.regex;
 import std.stdio;
 import std.file : isDir;
-import std.conv;
 import std.string;
 import tiger;
 import std.exception;
@@ -87,7 +86,7 @@ bool checkSums (in string parFile, in string parCWD, bool parTiger2, string parF
 		}
 
 		if (m) {
-			const string capt_filename = to!string(m.captures[index_file]);
+			const string capt_filename = cast(string)m.captures[index_file];
 			writef("%s: ", capt_filename);
 
 			const string curr_path = parCWD ~ capt_filename;
@@ -102,7 +101,7 @@ bool checkSums (in string parFile, in string parCWD, bool parTiger2, string parF
 				continue;
 			}
 			const string curr_tiger = tigerToString(getTiger(curr_file, parTiger2));
-			const string check_tiger = to!string(m.captures[index_hash]).toLower;
+			const string check_tiger = (cast(string)m.captures[index_hash]).toLower;
 			if (check_tiger == curr_tiger) {
 				writeln("OK");
 			}