--- zmap-1.2.0.orig/src/CMakeLists.txt
+++ zmap-1.2.0/src/CMakeLists.txt
@@ -96,7 +96,7 @@
 	)
 
 add_custom_command(OUTPUT parser.c
-	COMMAND byacc -d -o "${CMAKE_CURRENT_BINARY_DIR}/parser.c" "${CMAKE_CURRENT_SOURCE_DIR}/parser.y"
+	COMMAND yacc -d -o "${CMAKE_CURRENT_BINARY_DIR}/parser.c" "${CMAKE_CURRENT_SOURCE_DIR}/parser.y"
 	DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/parser.y"
 	)