diff --git a/3_module_development/31_what_is_an_edk_ii_module.md b/3_module_development/31_what_is_an_edk_ii_module.md
index 9f0fe8d..03eea38 100644
--- a/3_module_development/31_what_is_an_edk_ii_module.md
+++ b/3_module_development/31_what_is_an_edk_ii_module.md
@@ -71,7 +71,7 @@ file as EFI_PE_SECTION:
 EDK II defines many module types. The module type is used to:
 
 * Indicate the lifecycle for different types of modules. For example, PEIM is
-  dispatched in PEI phase and DXE_DRIVER orUEFI_DRIVER is dispatched at DXE
+  dispatched in PEI phase and DXE_DRIVER or UEFI_DRIVER is dispatched at DXE
   phase;
 
 * Indicate the binary image generation for different types of modules. For