diff --git a/src/modules/erlang.rs b/src/modules/erlang.rs
index dd633c4bb..8dc593c36 100644
--- a/src/modules/erlang.rs
+++ b/src/modules/erlang.rs
@@ -57,10 +57,10 @@ fn get_erlang_version() -> Option<String> {
         &[
             "-noshell",
             "-eval",
-            "'Fn=filename:join([code:root_dir(),\"releases\",erlang:system_info(otp_release),\"OTP_VERSION\"]),\
+            "Fn=filename:join([code:root_dir(),\"releases\",erlang:system_info(otp_release),\"OTP_VERSION\"]),\
              {ok,Content}=file:read_file(Fn),\
              io:format(\"~s\",[Content]),\
-             halt(0).'"
+             halt(0)."
         ]
     )?.stdout.trim().to_string())
 }
diff --git a/src/modules/php.rs b/src/modules/php.rs
index ae4bdf06e..b85341c0b 100644
--- a/src/modules/php.rs
+++ b/src/modules/php.rs
@@ -24,7 +24,7 @@ pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
         "php",
         &[
             "-nr",
-            "'echo PHP_MAJOR_VERSION.\".\".PHP_MINOR_VERSION.\".\".PHP_RELEASE_VERSION;'",
+            "echo PHP_MAJOR_VERSION.\".\".PHP_MINOR_VERSION.\".\".PHP_RELEASE_VERSION;",
         ],
     ) {
         Some(php_cmd_output) => {
diff --git a/src/utils.rs b/src/utils.rs
index 9d480b4e9..3f987af1c 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -115,7 +115,7 @@ active boot switches: -d:release\n",
             stdout: String::from("5.26.1"),
             stderr: String::default(),
         }),
-        "php -nr 'echo PHP_MAJOR_VERSION.\".\".PHP_MINOR_VERSION.\".\".PHP_RELEASE_VERSION;'" => {
+        "php -nr echo PHP_MAJOR_VERSION.\".\".PHP_MINOR_VERSION.\".\".PHP_RELEASE_VERSION;" => {
             Some(CommandOutput {
                 stdout: String::from("7.3.8"),
                 stderr: String::default(),