diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c77c47383c45c36829917d2d756c8fe9a00311a2..cd8de05f234e5544c843f0af1bef234459767e88 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -32,7 +32,7 @@ target_link_libraries(kdecorations2
 
 target_include_directories(kdecorations2 INTERFACE "$<INSTALL_INTERFACE:${KDECORATION2_INCLUDEDIR}>" )
 
-set_target_properties(kdecorations2 PROPERTIES VERSION   ${KDECORATION2_VERSION_STRING}
+set_target_properties(kdecorations2 PROPERTIES VERSION   ${KDECORATION2_VERSION}
                                                SOVERSION ${KDECORATION2_SOVERSION}
                                                EXPORT_NAME KDecoration
 )
diff --git a/src/private/CMakeLists.txt b/src/private/CMakeLists.txt
index e5d50a2e3efa62c8a611d94715797aa1cb6dd8bd..3465e13f0c5175e0faf58666b01edac920ba34dd 100644
--- a/src/private/CMakeLists.txt
+++ b/src/private/CMakeLists.txt
@@ -24,7 +24,7 @@ target_link_libraries(kdecorations2private
 
 target_include_directories(kdecorations2private INTERFACE "$<INSTALL_INTERFACE:${KDECORATION2_INCLUDEDIR}>" )
 
-set_target_properties(kdecorations2private PROPERTIES VERSION   ${KDECORATION2_VERSION_STRING}
+set_target_properties(kdecorations2private PROPERTIES VERSION   ${KDECORATION2_VERSION}
                                                       SOVERSION 8
                                                       EXPORT_NAME KDecoration2Private
 )