diff --git a/include/config.h b/include/config.h
index 6d8ce245..af649e8f 100644
--- a/include/config.h
+++ b/include/config.h
@@ -36,7 +36,7 @@ protected:
     virtual void setUnreadKeys() = 0;
     bool getConfigBool(QString key, QString value);
     int getConfigInteger(QString key, QString value, int min, int max, int defaultValue);
-    long getConfigLong(QString key, QString value, long min, long max, long defaultValue);
+    uint32_t getConfigUint32(QString key, QString value, uint32_t min, uint32_t max, uint32_t defaultValue);
 };
 
 class PorymapConfig: public KeyValueConfigBase
diff --git a/src/config.cpp b/src/config.cpp
index 77cb9992..b1f2f03f 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -153,9 +153,9 @@ int KeyValueConfigBase::getConfigInteger(QString key, QString value, int min, in
     return qMin(max, qMax(min, result));
 }
 
-long KeyValueConfigBase::getConfigLong(QString key, QString value, long min, long max, long defaultValue) {
+uint32_t KeyValueConfigBase::getConfigUint32(QString key, QString value, uint32_t min, uint32_t max, uint32_t defaultValue) {
     bool ok;
-    long result = value.toLong(&ok, 0);
+    uint32_t result = value.toUInt(&ok, 0);
     if (!ok) {
         logWarn(QString("Invalid config value for %1: '%2'. Must be an integer.").arg(key).arg(value));
         return defaultValue;
@@ -579,13 +579,13 @@ void ProjectConfig::parseConfigKeyValue(QString key, QString value) {
         }
         this->metatileAttributesSize = size;
     } else if (key == "metatile_behavior_mask") {
-        this->metatileBehaviorMask = getConfigLong(key, value, 0, 0xFFFFFFFF, 0);
+        this->metatileBehaviorMask = getConfigUint32(key, value, 0, 0xFFFFFFFF, 0);
     } else if (key == "metatile_terrain_type_mask") {
-        this->metatileTerrainTypeMask = getConfigLong(key, value, 0, 0xFFFFFFFF, 0);
+        this->metatileTerrainTypeMask = getConfigUint32(key, value, 0, 0xFFFFFFFF, 0);
     } else if (key == "metatile_encounter_type_mask") {
-        this->metatileEncounterTypeMask = getConfigLong(key, value, 0, 0xFFFFFFFF, 0);
+        this->metatileEncounterTypeMask = getConfigUint32(key, value, 0, 0xFFFFFFFF, 0);
     } else if (key == "metatile_layer_type_mask") {
-        this->metatileLayerTypeMask = getConfigLong(key, value, 0, 0xFFFFFFFF, 0);
+        this->metatileLayerTypeMask = getConfigUint32(key, value, 0, 0xFFFFFFFF, 0);
     } else if (key == "enable_map_allow_flags") {
         this->enableMapAllowFlags = getConfigBool(key, value);
 #ifdef CONFIG_BACKWARDS_COMPATABILITY