diff --git a/lib/builtins/emutls.c b/lib/builtins/emutls.c
index 12aad3a42..0265b7028 100644
--- a/lib/builtins/emutls.c
+++ b/lib/builtins/emutls.c
@@ -118,7 +118,7 @@ static void win_error(DWORD last_err, const char *hint) {
                        NULL, last_err, 0, (LPSTR)&buffer, 1, NULL)) {
         fprintf(stderr, "Windows error: %s\n", buffer);
     } else {
-        fprintf(stderr, "Unkown Windows error: %s\n", hint);
+        fprintf(stderr, "Unknown Windows error: %s\n", hint);
     }
     LocalFree(buffer);
 }
diff --git a/lib/fuzzer/FuzzerDriver.cpp b/lib/fuzzer/FuzzerDriver.cpp
index 17891d29c..d50ac17b9 100644
--- a/lib/fuzzer/FuzzerDriver.cpp
+++ b/lib/fuzzer/FuzzerDriver.cpp
@@ -730,7 +730,7 @@ int FuzzerDriver(int *argc, char ***argv, UserCallback Callback) {
       Printf("Dictionary analysis failed\n");
       exit(1);
     }
-    Printf("Dictionary analysis suceeded\n");
+    Printf("Dictionary analysis succeeded\n");
     exit(0);
   }
 
diff --git a/lib/fuzzer/afl/afl_driver.cpp b/lib/fuzzer/afl/afl_driver.cpp
index 15bceb896..fa8d1ee8f 100644
--- a/lib/fuzzer/afl/afl_driver.cpp
+++ b/lib/fuzzer/afl/afl_driver.cpp
@@ -264,7 +264,7 @@ int ExecuteFilesOnyByOne(int argc, char **argv) {
     assert(in);
     LLVMFuzzerTestOneInput(reinterpret_cast<const uint8_t *>(bytes.data()),
                            bytes.size());
-    std::cout << "Execution successfull" << std::endl;
+    std::cout << "Execution successful" << std::endl;
   }
   return 0;
 }