diff --git a/gtk/CMakeLists.txt b/gtk/CMakeLists.txt
index 6811db585e..c0fc4a0845 100644
--- a/gtk/CMakeLists.txt
+++ b/gtk/CMakeLists.txt
@@ -203,12 +203,12 @@ set(WIRESHARK_TAP_SRC
 ADD_CUSTOM_COMMAND(
 	OUTPUT wireshark-tap-register.c
 	COMMAND ${SHELL}
-	  ${CMAKE_SOURCE_DIR}/make-tapreg-dotc
+	  ${CMAKE_SOURCE_DIR}/tools/make-tapreg-dotc
 	  wireshark-tap-register.c
 	  ${CMAKE_CURRENT_SOURCE_DIR}
 	  ${WIRESHARK_TAP_SRC}
 	DEPENDS
-	  ${CMAKE_SOURCE_DIR}/make-tapreg-dotc
+	  ${CMAKE_SOURCE_DIR}/tools/make-tapreg-dotc
 	  ${WIRESHARK_TAP_SRC}
 )