diff --git a/src/config.nim b/src/config.nim
index c8d9bed..4612a48 100644
--- a/src/config.nim
+++ b/src/config.nim
@@ -56,21 +56,22 @@ Options
 -h, --help         Show this help text and exits
 -v, --version      Print the current peon version and exits
 -s, --string       Execute the passed string as if it was a file
--n, --noDump       Don't dump the result of compilation to a file
+-n, --noDump       Don't dump the result of compilation to a file.
+                   Note that no dump is created when using -s/--string
 -b, --breakpoints  Run the debugger at specific bytecode offsets (comma-separated).
                    Only available with --backend:bytecode and when compiled with VM 
                    debugging on
 -d, --disassemble  Disassemble the given bytecode file instead of executing it
                    (only makes sense with --backend:bytecode)
 -m, --mode         Set the compilation mode. Acceptable values are 'debug' and
-                   'release'
+                   'release'. Defaults to 'debug'
 -c, --compile      Compile the code, but do not execute it
---warnings         Turn warnings on/off (default: on). Acceptable values are 
+--warnings         Turn warnings on or off (default: on). Acceptable values are 
                    yes/on and no/off
 --noWarn           Disable a specific warning (for example, --noWarn unusedVariable)
---showMismatches   Show all mismatches when dispatching function calls fails (quite verbose!)
+--showMismatches   Show all mismatches when function dispatching fails (output is really verbose)
 --backend          Select the compilation backend (valid values are: 'c', 'cpp' and 'bytecode'). Note
                    that the REPL always uses the bytecode target. Defaults to 'bytecode'
--o, --output       Rename the output file with this value (with --backend:bytecode, the .pbc extension
-                   is added)
+-o, --output       Rename the output file with this value (with --backend:bytecode, a '.pbc' extension
+                   is added if not already present)
 """