diff --git a/src/poetry/utils/shell.py b/src/poetry/utils/shell.py
index d5b23288540..cf92e9abc6f 100644
--- a/src/poetry/utils/shell.py
+++ b/src/poetry/utils/shell.py
@@ -106,7 +106,7 @@ def activate(self, env: VirtualEnv) -> int | None:
             c.setecho(False)
             if self._name == "zsh":
                 # Under ZSH the source command should be invoked in zsh's bash emulator
-                c.sendline(f"emulate bash -c '. {shlex.quote(str(activate_path))}'")
+                c.sendline(f'''emulate bash -c ". {shlex.quote(str(activate_path))}"''')
         else:
             c.sendline(
                 f"{self._get_source_command()} {shlex.quote(str(activate_path))}"