diff --git a/retroshare.pri b/retroshare.pri
index e266755bb..5224ecb81 100644
--- a/retroshare.pri
+++ b/retroshare.pri
@@ -159,6 +159,7 @@ rs_macos10.10:CONFIG -= rs_macos10.11
 rs_macos10.12:CONFIG -= rs_macos10.11
 rs_macos10.13:CONFIG -= rs_macos10.11
 rs_macos10.14:CONFIG -= rs_macos10.11
+rs_macos10.15:CONFIG -= rs_macos10.11
 
 # To enable JSON API append the following assignation to qmake command line
 # "CONFIG+=rs_jsonapi"
@@ -760,6 +761,13 @@ macx-* {
 		QMAKE_CXXFLAGS += -Wno-nullability-completeness
 		QMAKE_CFLAGS += -Wno-nullability-completeness
 	}
+	rs_macos10.15 {
+		message(***retroshare.pri: Set Target and SDK to MacOS 10.15 )
+		QMAKE_MACOSX_DEPLOYMENT_TARGET=10.15
+		QMAKE_MAC_SDK = macosx10.15
+		QMAKE_CXXFLAGS += -Wno-nullability-completeness
+		QMAKE_CFLAGS += -Wno-nullability-completeness
+	}