diff --git a/libexec/rbenv-exec b/libexec/rbenv-exec
index eb16dc70..a9309d0e 100755
--- a/libexec/rbenv-exec
+++ b/libexec/rbenv-exec
@@ -33,7 +33,9 @@ export RBENV_VERSION
 RBENV_COMMAND_PATH="$(rbenv-which "$RBENV_COMMAND")"
 RBENV_BIN_PATH="${RBENV_COMMAND_PATH%/*}"
 
+OLDIFS="$IFS"
 IFS=$'\n' scripts=(`rbenv-hooks exec`)
+IFS="$OLDIFS"
 for script in "${scripts[@]}"; do
   source "$script"
 done
diff --git a/libexec/rbenv-rehash b/libexec/rbenv-rehash
index fd987ace..b220329a 100755
--- a/libexec/rbenv-rehash
+++ b/libexec/rbenv-rehash
@@ -144,7 +144,10 @@ make_shims ../versions/*/bin/*
 cd "$OLDPWD"
 
 # Allow plugins to register shims.
+OLDIFS="$IFS"
 IFS=$'\n' scripts=(`rbenv-hooks rehash`)
+IFS="$OLDIFS"
+
 for script in "${scripts[@]}"; do
   source "$script"
 done
diff --git a/libexec/rbenv-which b/libexec/rbenv-which
index 393a06e8..5d73673c 100755
--- a/libexec/rbenv-which
+++ b/libexec/rbenv-which
@@ -63,7 +63,9 @@ else
   RBENV_COMMAND_PATH="${RBENV_ROOT}/versions/${RBENV_VERSION}/bin/${RBENV_COMMAND}"
 fi
 
+OLDIFS="$IFS"
 IFS=$'\n' scripts=(`rbenv-hooks which`)
+IFS="$OLDIFS"
 for script in "${scripts[@]}"; do
   source "$script"
 done