diff --git a/src/bin/keycloakify/keycloakify.ts b/src/bin/keycloakify/keycloakify.ts
index 5409fd6d..1e632940 100644
--- a/src/bin/keycloakify/keycloakify.ts
+++ b/src/bin/keycloakify/keycloakify.ts
@@ -10,8 +10,11 @@ import { getThemeSrcDirPath } from "../getThemeSrcDirPath";
 import { getThisCodebaseRootDirPath } from "../tools/getThisCodebaseRootDirPath";
 import { readThisNpmProjectVersion } from "../tools/readThisNpmProjectVersion";
 import { keycloakifyBuildOptionsForPostPostBuildScriptEnvName } from "../constants";
+import { assertNoPnpmDlx } from "../tools/assertNoPnpmDlx";
 
 export async function main() {
+    assertNoPnpmDlx();
+
     const buildOptions = readBuildOptions({
         "processArgv": process.argv.slice(2)
     });
diff --git a/src/bin/tools/assertNoPnpmDlx.ts b/src/bin/tools/assertNoPnpmDlx.ts
new file mode 100644
index 00000000..fa47e320
--- /dev/null
+++ b/src/bin/tools/assertNoPnpmDlx.ts
@@ -0,0 +1,14 @@
+import { sep as pathSep } from "path";
+
+export function assertNoPnpmDlx() {
+    if (__dirname.includes(`${pathSep}pnpm${pathSep}dlx${pathSep}`)) {
+        console.log(
+            [
+                "Please don't use `pnpm dlx keycloakify`. Even if you're using pnpm as a package manager",
+                "use `npx keycloakify` or `pnpm exec keycloakify` instead since you want to use the keycloakify version that is installed in your project and",
+                "not the latest version on NPM."
+            ].join(" ")
+        );
+        process.exit(1);
+    }
+}