diff --git a/Converter Mod/CK2toEU3 Converter Mod/Converter Files/religion_mappings.txt b/Converter Mod/CK2toEU3 Converter Mod/Converter Files/religion_mappings.txt
index 53004a53b..4d1bd1e68 100644
--- a/Converter Mod/CK2toEU3 Converter Mod/Converter Files/religion_mappings.txt	
+++ b/Converter Mod/CK2toEU3 Converter Mod/Converter Files/religion_mappings.txt	
@@ -9,6 +9,7 @@ link = { ck2 = lollard  eu3 = lollard }
 link = { ck2 = orthodox  eu3 = orthodox }
 link = { ck2 = bogomilist  eu3 = bogomilist }
 link = { ck2 = iconoclast  eu3 = iconoclast }
+link = { ck2 = miaphysite  eu3 = misphysite }
 link = { ck2 = monophysite  eu3 = monophysite }
 link = { ck2 = nestorian  eu3 = nestorian }
 link = { ck2 = sunni  eu3 = sunni }
diff --git a/Converter Mod/CK2toEU3 Converter Mod/Mod Files/Converter/common/religion.txt b/Converter Mod/CK2toEU3 Converter Mod/Mod Files/Converter/common/religion.txt
index ac918aa8a..bec7cecd4 100644
--- a/Converter Mod/CK2toEU3 Converter Mod/Mod Files/Converter/common/religion.txt	
+++ b/Converter Mod/CK2toEU3 Converter Mod/Mod Files/Converter/common/religion.txt	
@@ -226,6 +226,25 @@ christian = {
 		}
 		
 	}
+
+	miaphysite = {
+		color = { 0.8 0.4 0.1 }
+		
+		allowed_conversion = {
+			orthodox
+		}
+		
+		province = {
+			stability_cost = 30
+		}
+			
+		country = {
+			missionaries = 0.25
+			missionary_placement_chance = 0.05
+			tolerance_heretic = 1
+		}
+		
+	}
 	
 	nestorian = {
 		color = { 0.6 0.2 0.2 }
diff --git a/Data Files/Changelog.txt b/Data Files/Changelog.txt
index 2d7c8b2a1..df340509d 100644
--- a/Data Files/Changelog.txt	
+++ b/Data Files/Changelog.txt	
@@ -218,4 +218,5 @@ Revision	Log Message
 214		1.06 saves don't lose muslim buildings when converted by a 1.07 install
 215		Apply change 213 to test configs
 216		Convert tech
-217		Tech investment
\ No newline at end of file
+217		Tech investment
+218		Add miaphysite religion mapping
\ No newline at end of file
diff --git a/Data Files/religion_mappings.txt b/Data Files/religion_mappings.txt
index 05be7646d..3a98cd4db 100644
--- a/Data Files/religion_mappings.txt	
+++ b/Data Files/religion_mappings.txt	
@@ -9,6 +9,7 @@ link = { ck2 = lollard  eu3 = catholic }
 link = { ck2 = orthodox  eu3 = orthodox }
 link = { ck2 = bogomilist  eu3 = orthodox }
 link = { ck2 = iconoclast  eu3 = orthodox }
+link = { ck2 = miaphysite  eu3 = orthodox }
 link = { ck2 = monophysite  eu3 = orthodox }
 link = { ck2 = nestorian  eu3 = orthodox }
 link = { ck2 = sunni  eu3 = sunni }
diff --git a/Source/EU3World/EU3Province.cpp b/Source/EU3World/EU3Province.cpp
index 93b70e66b..b4fe6f830 100644
--- a/Source/EU3World/EU3Province.cpp
+++ b/Source/EU3World/EU3Province.cpp
@@ -467,7 +467,7 @@ void EU3Province::determineCulture(const cultureMapping& cultureMap, const vecto
 	culture = topCulture;
 }
 
-
+#pragma optimize("", off)
 void EU3Province::determineReligion(const religionMapping& religionMap, const vector<CK2Province*>& srcProvinces)
 {
 
@@ -631,7 +631,7 @@ void EU3Province::determineReligion(const religionMapping& religionMap, const ve
 		log("\tError: could not map religion %s to any EU3 religions (province %d: %s)\n", topReligion.c_str(), num, capital.c_str());
 	}
 }
-
+#pragma optimize("", off)
 
 void EU3Province::setManpower(double _manpower)
 {