diff --git a/src/service/clmcservice/aggregationapi/utilities.py b/src/service/clmcservice/aggregationapi/utilities.py
index 14fd1b4114733f88f684bcf955de228961432b5e..4a54b29b7281c657377f342f8c3c1a0a17baec84 100644
--- a/src/service/clmcservice/aggregationapi/utilities.py
+++ b/src/service/clmcservice/aggregationapi/utilities.py
@@ -154,6 +154,11 @@ def validate_conf_file(conf_file_path):
         if key not in conf[AGGREGATOR_CONFIG_SECTION]:
             return None  # the configuration must include each configuration attribute
 
+    try:
+        int(conf[AGGREGATOR_CONFIG_SECTION]['aggregator_report_period'])
+    except ValueError:
+        return None  # the configuration must contain a valid integer for the aggregator's report period
+
     return conf
 
 
diff --git a/src/service/clmcservice/configapi/__init__.py b/src/service/clmcservice/configapi/__init__.py
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..81bb24987a8da2e191361344076c19765fd854ed 100644
--- a/src/service/clmcservice/configapi/__init__.py
+++ b/src/service/clmcservice/configapi/__init__.py
@@ -0,0 +1 @@
+__all__ = ['views']
diff --git a/src/service/clmcservice/whoamiapi/__init__.py b/src/service/clmcservice/whoamiapi/__init__.py
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..81bb24987a8da2e191361344076c19765fd854ed 100644
--- a/src/service/clmcservice/whoamiapi/__init__.py
+++ b/src/service/clmcservice/whoamiapi/__init__.py
@@ -0,0 +1 @@
+__all__ = ['views']