diff --git a/buildSrc/src/main/kotlin/jni.gradle.kts b/buildSrc/src/main/kotlin/jni.gradle.kts
index 21fe6f3..a15fc98 100644
--- a/buildSrc/src/main/kotlin/jni.gradle.kts
+++ b/buildSrc/src/main/kotlin/jni.gradle.kts
@@ -22,11 +22,14 @@ tasks.register("compileJNI") {
 
 jniPlatforms.forEach {
     val buildDir = File(cDir, "build-${it.name}")
-    if (!buildDir.exists()) {
-        buildDir.mkdir()
-    }
 
     tasks.register<Exec>("cmake-${it.name}") {
+        doFirst {
+            if (!buildDir.exists()) {
+                buildDir.mkdir()
+            }
+        }
+
         group = "jni"
         workingDir(buildDir)