diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4c33d5f88..68bfcdab1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -119,9 +119,9 @@ gz_create_docs(
   API_MAINPAGE_MD "${CMAKE_BINARY_DIR}/api.md"
   TUTORIALS_MAINPAGE_MD "${CMAKE_BINARY_DIR}/tutorials.md"
   TAGFILES
-    "${IGNITION-COMMON_DOXYGEN_TAGFILE} = ${IGNITION-COMMON_API_URL}"
-    "${IGNITION-PLUGIN_DOXYGEN_TAGFILE} = ${IGNITION-PLUGIN_API_URL}"
-    "${IGNITION-MATH_DOXYGEN_TAGFILE} = ${IGNITION-MATH_API_URL}"
+    "${GZ-COMMON_DOXYGEN_TAGFILE} = ${GZ-COMMON_API_URL}"
+    "${GZ-PLUGIN_DOXYGEN_TAGFILE} = ${GZ-PLUGIN_API_URL}"
+    "${GZ-MATH_DOXYGEN_TAGFILE} = ${GZ-MATH_API_URL}"
   )
 
 file(COPY ${CMAKE_SOURCE_DIR}/tutorials/img/ DESTINATION ${CMAKE_BINARY_DIR}/doxygen/html/img/)