diff --git a/profile.d/fun.sh b/profile.d/fun.sh
index fb80c33..53b65e7 100644
--- a/profile.d/fun.sh
+++ b/profile.d/fun.sh
@@ -118,13 +118,13 @@ export -f busy
 # Options:
 #   --min-delay=<ms> : minimum delay between output lines (milliseconds, default: 40)
 #   --max-delay=<ms> : maximum delay between output lines (milliseconds, default: 150)
-#   --lang=<lang>    : source language preset: c (default), cpp, java, python
+#   --lang=<lang>    : source language preset: c (default), cpp, java, python, random
 #   --errors         : inject fake compilation errors at the end of the build
 fake_compile()
 {
     local min_ms="${FAKE_COMPILE_DEFAULT_MIN_DELAY:-40}" \
           max_ms="${FAKE_COMPILE_DEFAULT_MAX_DELAY:-150}" \
-          lang="c" with_errors=0
+          lang="${FAKE_COMPILE_DEFAULT_LANG:-c}" with_errors=0
 
     local PARSED
     # Short: h, n:, x:, l:, e
@@ -146,7 +146,7 @@ fake_compile()
                 printf "\t-h, --help\t\t\tDisplay this help screen\n"
                 printf "\t-n, --min-delay MS\t\tMin delay between lines in milliseconds (default: 40)\n"
                 printf "\t-x, --max-delay MS\t\tMax delay between lines in milliseconds (default: 150)\n"
-                printf "\t-l, --lang LANG\t\t\tLanguage preset: c, cpp, java, python (default: c)\n"
+                printf "\t-l, --lang LANG\t\t\tLanguage preset: c, cpp, java, python, random (default: c)\n"
                 printf "\t-e, --errors\t\t\tInject fake compilation errors at the end\n"
                 return 0
                 ;;
@@ -169,9 +169,9 @@ fake_compile()
             -l|--lang)
                 lang="$2"
                 case "$lang" in
-                    c|cpp|java|python) ;;
+                    c|cpp|java|python|random) ;;
                     *)
-                        disp E "Invalid lang: must be one of: c, cpp, java, python."
+                        disp E "Invalid lang: must be one of: c, cpp, java, python, random."
                         return 1
                         ;;
                 esac
@@ -243,6 +243,16 @@ fake_compile()
         esac
 
         while true; do
+            if [[ "$lang" == "random" ]]; then
+                _langs=("c" "cpp" "java" "python")
+                _pick="${_langs[$((RANDOM % 4))]}"
+                case "$_pick" in
+                    c)      files=("${c_files[@]}");      ext=".c"    ;;
+                    cpp)    files=("${cpp_files[@]}");    ext=".cpp"  ;;
+                    java)   files=("${java_files[@]}");   ext=".java" ;;
+                    python) files=("${python_files[@]}"); ext=".py"   ;;
+                esac
+            fi
             total=${#files[@]}
             i=0
             for f in "${files[@]}"; do