diff --git a/pages/common/c99.md b/pages/common/c99.md
index ade255f13..e3f6c4d6c 100644
--- a/pages/common/c99.md
+++ b/pages/common/c99.md
@@ -2,18 +2,18 @@
 
 > Compiles C programs according to the ISO C standard.
 
-- Compile source files and create an executable:
+- Compile source file(s) and create an executable:
 
 `c99 {{file.c}}`
 
-- Compile source files and create an executable with a custom name:
+- Compile source file(s) and create an executable with a custom name:
 
 `c99 -o {{executable_name}} {{file.c}}`
 
-- Compile source files and create object files:
+- Compile source file(s) and create object file(s):
 
 `c99 -c {{file.c}}`
 
-- Compile source files, link with object files, and create an executable:
+- Compile source file(s), link with object file(s), and create an executable:
 
 `c99 {{file.c}} {{file.o}}`