diff --git a/libs/models.py b/libs/models.py
index 2ff0ff0..7d4a439 100644
--- a/libs/models.py
+++ b/libs/models.py
@@ -41,7 +41,7 @@ def log_gamma_dist(
     '''
     '''
     factor = 0.5 if is_squared else 1.0
-    noise = normal(GAUSSIAN_NOISE_MEAN, GAUSSIAN_NOISE_STD) if gaussian_noise else 0.0
+    noise = np.random.normal(GAUSSIAN_NOISE_MEAN, GAUSSIAN_NOISE_STD) if gaussian_noise else 0.0
     rss = pwr - 10.0 * gamma * factor * np.log10(dist) + noise + loss
     rss[rss < NOISE_FLOOR] = NOISE_FLOOR
     rss[rss > pwr] = pwr