diff --git a/sdf/1.8/CMakeLists.txt b/sdf/1.8/CMakeLists.txt
index d074806f5..30555b39a 100644
--- a/sdf/1.8/CMakeLists.txt
+++ b/sdf/1.8/CMakeLists.txt
@@ -82,5 +82,5 @@ add_custom_target(schema1_8 ALL DEPENDS ${SDF_SCHEMA})
 
 set_source_files_properties(${SDF_SCHEMA} PROPERTIES GENERATED TRUE)
 
-install(FILES 1_7.convert ${sdfs} DESTINATION ${CMAKE_INSTALL_FULL_DATAROOTDIR}/sdformat${SDF_MAJOR_VERSION}/1.8)
-install(FILES ${SDF_SCHEMA} DESTINATION ${CMAKE_INSTALL_FULL_DATAROOTDIR}/sdformat${SDF_MAJOR_VERSION}/1.8)
+install(FILES 1_7.convert ${sdfs} DESTINATION ${CMAKE_INSTALL_FULL_DATAROOTDIR}/sdformat${PROJECT_VERSION_MAJOR}/1.8)
+install(FILES ${SDF_SCHEMA} DESTINATION ${CMAKE_INSTALL_FULL_DATAROOTDIR}/sdformat${PROJECT_VERSION_MAJOR}/1.8)
diff --git a/sdf/1.9/CMakeLists.txt b/sdf/1.9/CMakeLists.txt
index 209d63043..7778acafd 100644
--- a/sdf/1.9/CMakeLists.txt
+++ b/sdf/1.9/CMakeLists.txt
@@ -82,5 +82,5 @@ add_custom_target(schema1_9 ALL DEPENDS ${SDF_SCHEMA})
 
 set_source_files_properties(${SDF_SCHEMA} PROPERTIES GENERATED TRUE)
 
-install(FILES 1_8.convert ${sdfs} DESTINATION ${CMAKE_INSTALL_FULL_DATAROOTDIR}/sdformat${SDF_MAJOR_VERSION}/1.9)
-install(FILES ${SDF_SCHEMA} DESTINATION ${CMAKE_INSTALL_FULL_DATAROOTDIR}/sdformat${SDF_MAJOR_VERSION}/1.9)
+install(FILES 1_8.convert ${sdfs} DESTINATION ${CMAKE_INSTALL_FULL_DATAROOTDIR}/sdformat${PROJECT_VERSION_MAJOR}/1.9)
+install(FILES ${SDF_SCHEMA} DESTINATION ${CMAKE_INSTALL_FULL_DATAROOTDIR}/sdformat${PROJECT_VERSION_MAJOR}/1.9)