diff --git a/client.d b/client.d
index ce2bde2..0920ed4 100644
--- a/client.d
+++ b/client.d
@@ -26,6 +26,7 @@ import std.process;
 import std.algorithm;
 import std.path;
 import std.file;
+import std.conv;
 
 import msgpack;
 import messages;
@@ -121,7 +122,7 @@ int main(string[] args)
 	}
 	else
 	{
-		sourceCode = uninitializedArray!(ubyte[])(cast(size_t) f.size);
+		sourceCode = uninitializedArray!(ubyte[])(to!size_t(f.size));
 		f.rawRead(sourceCode);
 	}
 
diff --git a/modulecache.d b/modulecache.d
index 7ae3411..64c1a3a 100644
--- a/modulecache.d
+++ b/modulecache.d
@@ -26,6 +26,7 @@ import stdx.d.ast;
 import std.stdio;
 import std.array;
 import std.path;
+import std.conv;
 
 import acvisitor;
 import actypes;
@@ -86,7 +87,7 @@ struct ModuleCache
 		try
 		{
 			File f = File(location);
-			ubyte[] source = uninitializedArray!(ubyte[])(f.size);
+			ubyte[] source = uninitializedArray!(ubyte[])(to!size_t(f.size));
 			f.rawRead(source);
 
 			LexerConfig config;