diff --git a/aws-runtime/aws-config/native/src/aws/sdk/kotlin/runtime/auth/credentials/executeCommandNative.kt b/aws-runtime/aws-config/native/src/aws/sdk/kotlin/runtime/auth/credentials/executeCommandNative.kt
index 803781ec71d..14a8fa1e528 100644
--- a/aws-runtime/aws-config/native/src/aws/sdk/kotlin/runtime/auth/credentials/executeCommandNative.kt
+++ b/aws-runtime/aws-config/native/src/aws/sdk/kotlin/runtime/auth/credentials/executeCommandNative.kt
@@ -48,8 +48,8 @@ internal actual suspend fun executeCommand(
         }
 
         val shell = when (platformProvider.osInfo().family) {
-            OsFamily.Windows -> "cmd.exe"
-            else -> "sh"
+            OsFamily.Windows -> "C:\\\\Windows\\\\System32\\\\cmd.exe"
+            else -> "/bin/sh"
         }
 
         val shellArg = when (platformProvider.osInfo().family) {
@@ -57,8 +57,10 @@ internal actual suspend fun executeCommand(
             else -> "-c"
         }
 
-        val argv = memScoped { (arrayOf(shell, shellArg, command).map { it.cstr.ptr } + null).toCValues() }
-        execvp(shell, argv)
+        memScoped {
+            val argv = (arrayOf(shell, shellArg, command).map { it.cstr.ptr } + null).toCValues()
+            execvp(shell, argv)
+        }
         _exit(127) // If exec fails
     }