diff --git a/share/completions/gcc.fish b/share/completions/gcc.fish
index f7032cf6a..2cbdd06b2 100644
--- a/share/completions/gcc.fish
+++ b/share/completions/gcc.fish
@@ -491,6 +491,9 @@ complete -c gcc -s S -d 'Stop after the stage of compilation proper; do not asse
 complete -c gcc -s E -d 'Stop after the preprocessing stage; do not run the compiler proper'
 complete -c gcc -o llibrary -d 'Search the library named library when linking'
 complete -c gcc -s l -d 'Search the library named library when linking'
+complete -c gcc -o lm -d 'Search the math library when linking'
+complete -c gcc -o lz -d 'Search the zlib library when linking'
+complete -c gcc -o lrt -d 'Search the realtime extensions library when linking'
 complete -c gcc -o lobjc -d 'You need this special case of the -l option in order to link an Objective-C or Objective-C++ program'
 complete -c gcc -o nostartfiles -d 'Do not use the standard system startup files when linking'
 complete -c gcc -o nodefaultlibs -d 'Do not use the standard system libraries when linking'