fix typos
diff --git a/llvm_mode/README.lto.md b/llvm_mode/README.lto.md
index 674531f..110b5e9 100644
--- a/llvm_mode/README.lto.md
+++ b/llvm_mode/README.lto.md
@@ -83,12 +83,12 @@
Also whitelisting (AFL_LLVM_WHITELIST -> [README.whitelist.md](README.whitelist.md)) and
laf-intel/compcov (AFL_LLVM_LAF_* -> [README.laf-intel.md](README.laf-intel.md)) work.
InsTrim (control flow graph instrumentation) is supported and recommended!
- (set `AFL_LLVM_INTRUMENT=CFG`)
+ (set `AFL_LLVM_INSTRUMENT=CFG`)
Example:
```
CC=afl-clang-lto CXX=afl-clang-lto++ RANLIB=llvm-ranlib AR=llvm-ar ./configure
-export AFL_LLVM_INTRUMENT=CFG
+export AFL_LLVM_INSTRUMENT=CFG
make
```
