diff --git a/src/app.rs b/src/app.rs
index 0b4e121..9df45cb 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -295,9 +295,9 @@ pub fn build_app() -> App<'static, 'static> {
                 .value_terminator(";")
                 .value_name("cmd")
                 .conflicts_with("list-details")
-                .help("Execute a command for each search result")
+                .help("Execute a command for each search result in parallel")
                 .long_help(
-                    "Execute a command for each search result.\n\
+                    "Execute a command for each search result in parallel (use --threads=1 for sequential command execution).\n\
                      All arguments following --exec are taken to be arguments to the command until the \
                      argument ';' is encountered.\n\
                      Each occurrence of the following placeholders is substituted by a path derived from the \