diff --git a/fish.xcodeproj/project.pbxproj b/fish.xcodeproj/project.pbxproj
index d1c9a2a06..49c5c6587 100644
--- a/fish.xcodeproj/project.pbxproj
+++ b/fish.xcodeproj/project.pbxproj
@@ -1183,6 +1183,7 @@
 				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				GCC_ENABLE_CPP_EXCEPTIONS = NO;
+				GCC_ENABLE_CPP_RTTI = NO;
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"LOCALEDIR=\\\"/usr/local/share/locale\\\"",
 					"PREFIX=L\\\"/usr/local\\\"",
@@ -1330,6 +1331,7 @@
 				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				GCC_ENABLE_CPP_EXCEPTIONS = NO;
+				GCC_ENABLE_CPP_RTTI = YES;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"LOCALEDIR=\\\"/usr/local/share/locale\\\"",
@@ -1355,6 +1357,7 @@
 				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				GCC_ENABLE_CPP_EXCEPTIONS = NO;
+				GCC_ENABLE_CPP_RTTI = YES;
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"LOCALEDIR=\\\"/usr/local/share/locale\\\"",
 					"PREFIX=L\\\"/usr/local\\\"",