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-rw-r--r--scripts/nix-profile.sh.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/nix-profile.sh.in b/scripts/nix-profile.sh.in
index a5f52274fc70..db03e16ba89a 100644
--- a/scripts/nix-profile.sh.in
+++ b/scripts/nix-profile.sh.in
@@ -75,7 +75,7 @@ if [ -n "$HOME" ] && [ -n "$USER" ]; then
         export NIX_SSL_CERT_FILE="$NIX_LINK/etc/ca-bundle.crt"
     fi
 
-    if [ -n "${MANPATH}" ]; then
+    if [ -n "${MANPATH-}" ]; then
         export MANPATH="$NIX_LINK/share/man:$MANPATH"
     fi