This question could use some more detail to ensure that you get an answer that pertains to the question. Are you defining the theorem inside of some environment? What environment? What package provides the environment?
– Paul StiversonJun 16 '15 at 17:59
This relies heavily on the package you may be using that provides you with theorem-writing capabilities (if any). Please present the community with a minimal working example (MWE) that replicates your current behaviour.
– WernerJun 16 '15 at 18:00
amsthmis being used, the question cited by @Werner is definitely a duplicate. – barbara beeton Jun 16 '15 at 18:06\swapnumbersin your preamble, before declaring your theorem-like structures. – Bernard Jun 16 '15 at 18:22