diff --git a/json-path/src/main/java/com/jayway/jsonpath/internal/JsonContext.java b/json-path/src/main/java/com/jayway/jsonpath/internal/JsonContext.java
index 6f2706b1..5cc0889c 100644
--- a/json-path/src/main/java/com/jayway/jsonpath/internal/JsonContext.java
+++ b/json-path/src/main/java/com/jayway/jsonpath/internal/JsonContext.java
@@ -26,7 +26,6 @@ import com.jayway.jsonpath.ReadContext;
 import com.jayway.jsonpath.TypeRef;
 import com.jayway.jsonpath.spi.cache.Cache;
 import com.jayway.jsonpath.spi.cache.CacheProvider;
-import com.jayway.jsonpath.spi.cache.LRUCache;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
diff --git a/json-path/src/main/java/com/jayway/jsonpath/internal/function/numeric/AbstractAggregation.java b/json-path/src/main/java/com/jayway/jsonpath/internal/function/numeric/AbstractAggregation.java
index 1215f434..fe97628c 100644
--- a/json-path/src/main/java/com/jayway/jsonpath/internal/function/numeric/AbstractAggregation.java
+++ b/json-path/src/main/java/com/jayway/jsonpath/internal/function/numeric/AbstractAggregation.java
@@ -49,10 +49,10 @@ public abstract class AbstractAggregation implements PathFunction {
         }
         if (parameters != null) {
             for (Parameter param : parameters) {
-                if (param.getValue() instanceof Number) {
-                    Number value = (Number)param.getValue();
+                Object value = param.getValue();
+                if (null != value && value instanceof Number) {
                     count++;
-                    next(value);
+                    next((Number)value);
                 }
             }
         }