diff --git a/CMakeLists.txt b/CMakeLists.txt
index 01a3e094d..5569866e1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -805,7 +805,7 @@ IF(CMAKE_COMPILER_IS_GNUCXX)
     # errors instead of warnings for certain issues, including superfluous
     # semicolons and commas, and the use of long long. -fpermissive seems
     # to be the workaround.
-    SET(OSG_AGGRESSIVE_WARNING_FLAGS -Wall -Wparentheses -Wno-long-long -Wno-import -pedantic -Wreturn-type -Wmissing-braces -Wunknown-pragmas -Wunused -fpermissive)
+    SET(OSG_AGGRESSIVE_WARNING_FLAGS -Wall -Wparentheses -Wno-long-long -Wno-import -pedantic -Wreturn-type -Wmissing-braces -Wunknown-pragmas -Wunused)
 
     # Previous included -Wformat=2 in OSG_AGGRESSIVE_WARNING_FLAGS but had to remove it due to standard library errors