diff --git a/bin/csc-chfn b/bin/csc-chfn
index 4b6be80..f723984 100755
--- a/bin/csc-chfn
+++ b/bin/csc-chfn
@@ -74,6 +74,9 @@ def main():
 
     pwuid, pwnam = whoami()
 
+    euid = os.geteuid()
+    os.setreuid(euid, euid)
+
     gecos_params = {}
 
     try:
diff --git a/bin/csc-chsh b/bin/csc-chsh
index ef0db49..25013a1 100755
--- a/bin/csc-chsh
+++ b/bin/csc-chsh
@@ -55,6 +55,9 @@ def main():
 
     pwuid, pwnam = whoami()
 
+    euid = os.geteuid()
+    os.setreuid(euid, euid)
+
     try:
         options, arguments = getopt.gnu_getopt(sys.argv[1:], 's:')
         new_shell = None