diff --git a/db.go b/db.go
index 459c0d5..a0e64f5 100644
--- a/db.go
+++ b/db.go
@@ -91,7 +91,7 @@ func (dbs *dbSession) PrepareForUpdate(columns []string) (*time.Time, error) {
 			return nil, err
 		}
 
-		t, err := timeFromDBFormat(lastSeenTimeStr)
+		t, _ := timeFromDBFormat(lastSeenTimeStr)
 		lastSeemTime = &t
 	}
 
@@ -154,7 +154,7 @@ func (dbs *dbSession) QueryTop(spec *RequestCountSpec) ([]string, [][]string, er
 		}
 		strValues := make([]string, len(values))
 		for i, value := range values {
-			strValues[i] = fmt.Sprintf("%s", *value.(*sql.RawBytes))
+			strValues[i] = string(*value.(*sql.RawBytes))
 		}
 		results = append(results, strValues)
 	}
diff --git a/main.go b/main.go
index d55c4a1..771e80b 100644
--- a/main.go
+++ b/main.go
@@ -115,10 +115,8 @@ func resolveWhereConditions(clauses []string) (map[string][]string, error) {
 		}
 		if column, found := FIELD_NAMES[keyvalue[0]]; !found {
 			return nil, fmt.Errorf("unknown field name %s", keyvalue[0])
-		} else if _, found := conditions[column]; found {
-			conditions[column] = append(conditions[column], keyvalue[1])
 		} else {
-			conditions[column] = []string{keyvalue[1]}
+			conditions[column] = append(conditions[column], keyvalue[1])
 		}
 	}