diff --git a/src/key_search_helpers.h b/src/key_search_helpers.h
index f3a6bd5..f871394 100644
--- a/src/key_search_helpers.h
+++ b/src/key_search_helpers.h
@@ -21,7 +21,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-#ifndef EOSIOKEYGEN_KEY_SEARCH_HELPSER_H
+#ifndef EOSIOKEYGEN_KEY_SEARCH_HELPERS_H
 #define EOSIOKEYGEN_KEY_SEARCH_HELPERS_H
 
 #include "string.h"