gistfile1.diff

diff --git a/src/mapgen.cpp b/src/mapgen.cpp
index 905e80e..29a2e23 100644
--- a/src/mapgen.cpp
+++ b/src/mapgen.cpp
@@ -659,8 +659,9 @@ void DecoSchematic::placeStructure(Map *map, v3s16 p) {
 bool DecoSchematic::loadSchematicFile() {
 	std::ifstream is(filename.c_str(), std::ios_base::binary);
 
-	u32 signature = readU32(is);
-	if (signature != 'MTSM') {
+	char signature[4] = {0};
+	is.read(signature, 4);
+	if (memcmp(signature, "MTSM", 4) != 0) {
 		errorstream << "loadSchematicFile: invalid schematic "
 			"file" << std::endl;
 		return false;
@@ -719,7 +720,7 @@ bool DecoSchematic::loadSchematicFile() {
 void DecoSchematic::saveSchematicFile(INodeDefManager *ndef) {
 	std::ofstream os(filename.c_str(), std::ios_base::binary);
 
-	writeU32(os, 'MTSM'); // signature
+	os << "MTSM";         // signature
 	writeU16(os, 1);      // version
 	writeV3S16(os, size); // schematic size