diff --git a/.gitignore b/.gitignore
index 990936c..55a6e0c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 .idea/
+.vs/
 cmake-build-debug/
diff --git a/TIFF.h b/TIFF.h
index b59d85e..aef4d56 100644
--- a/TIFF.h
+++ b/TIFF.h
@@ -7,6 +7,7 @@
 #include <vector>
 #include <map>
 #include <variant>
+#include <optional>
 
 constexpr int16_t TIFF_MAGIC = 42;
 
diff --git a/main.cpp b/main.cpp
index 7479d0a..3ce62b1 100644
--- a/main.cpp
+++ b/main.cpp
@@ -14,7 +14,7 @@ int main(int argc, char** argv) {
 		ifd.dumpInfo();
 	}
 
-//	system("pause");
+	system("pause");
 
 	return 0;
 }
\ No newline at end of file