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-rw-r--r--src/Fen.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Fen.hpp b/src/Fen.hpp
index bcb93de..ac344ad 100644
--- a/src/Fen.hpp
+++ b/src/Fen.hpp
@@ -6,7 +6,7 @@
(c == '0' || c == '1' || c == '2' || c == '3' || c == '4' || c == '5' || \
c == '6' || c == '7' || c == '8' || c == '9')
#define IS_BLANK(c) (c == ' ' || c == '\n' || c == '\t' || c == '\r')
-#define CHECK_LOC() {if(loc>=fen.size()){throw InvalidFEN();}}
+#define CHECK_LOC() {if(loc>=(char)fen.size()){throw InvalidFEN();}}
namespace chessarbiter {