diff --git a/lib/ib/support.rb b/lib/ib/support.rb
index 173e417..14e61ee 100644
--- a/lib/ib/support.rb
+++ b/lib/ib/support.rb
@@ -29,13 +29,17 @@ def read_decimal
 		## Values -1 and below indicate: Not computed (TickOptionComputation)
 		def read_decimal_limit_1
 			i= read_float
-			i <= -1 ? nil : i
+      return nil if i.nil?
+      return nil if i <= -1
+      i
 		end
 
 		## Values -2 and below indicate: Not computed (TickOptionComputation)
 		def read_decimal_limit_2
 			i= read_float
-			i <= -2 ? nil : i
+      return nil if i.nil?
+      return nil if i <= -2
+      i
 		end