diff --git a/README.md b/README.md
index 85798e0e8..6745e15c0 100644
--- a/README.md
+++ b/README.md
@@ -91,7 +91,8 @@ cargo clippy
 
 #### Automatically applying Clippy suggestions
 
-Clippy can automatically apply some lint suggestions, just like the compiler.
+Clippy can automatically apply some lint suggestions, just like the compiler. Note that `--fix` implies
+`--all-targets`, so it can fix as much code as it can.
 
 ```terminal
 cargo clippy --fix
diff --git a/book/src/usage.md b/book/src/usage.md
index 32084a919..36448e4cc 100644
--- a/book/src/usage.md
+++ b/book/src/usage.md
@@ -111,7 +111,8 @@ fn main() {
 
 ### Automatically applying Clippy suggestions
 
-Clippy can automatically apply some lint suggestions, just like the compiler.
+Clippy can automatically apply some lint suggestions, just like the compiler. Note that `--fix` implies
+`--all-targets`, so it can fix as much code as it can.
 
 ```terminal
 cargo clippy --fix
diff --git a/lintcheck/README.md b/lintcheck/README.md
index faf3ce909..37cc04538 100644
--- a/lintcheck/README.md
+++ b/lintcheck/README.md
@@ -79,9 +79,11 @@ is explicitly specified in the options.
 
 ### Fix mode
 You can run `cargo lintcheck --fix` which will run Clippy with `--fix` and
-print a warning if Clippy's suggestions fail to apply (if the resulting code does not build).  
+print a warning if Clippy's suggestions fail to apply (if the resulting code does not build). 
 This lets us spot bad suggestions or false positives automatically in some cases.  
 
+> Note: Fix mode implies `--all-targets`, so it can fix as much code as it can.
+
 Please note that the target dir should be cleaned afterwards since clippy will modify
 the downloaded sources which can lead to unexpected results when running lintcheck again afterwards.
 
diff --git a/src/main.rs b/src/main.rs
index c5e9b96cf..188ff87ab 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -13,7 +13,7 @@ Usage:
 
 Common options:
     --no-deps                Run Clippy only on the given crate, without linting the dependencies
-    --fix                    Automatically apply lint suggestions. This flag implies `--no-deps`
+    --fix                    Automatically apply lint suggestions. This flag implies `--no-deps` and `--all-targets`
     -h, --help               Print this message
     -V, --version            Print version info and exit
     --explain LINT           Print the documentation for a given lint