diff --git a/resources/imap/saslplugin/CMakeLists.txt b/resources/imap/saslplugin/CMakeLists.txt
index a8be488f8..65a9a9bb3 100644
--- a/resources/imap/saslplugin/CMakeLists.txt
+++ b/resources/imap/saslplugin/CMakeLists.txt
@@ -1,23 +1,24 @@
 if (NOT CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
    add_definitions(-D_POSIX_SOURCE)
 endif()
 
 if (WIN32)
     add_definitions(-DWIN32)
 elseif (APPLE)
     add_definitions(-Dmacintosh)
 endif()
 
 set(kdexoauth2sasl_SRCS
     xoauth2plugin.c
     xoauth2plugin_init.c
     plugin_common.c
 )
 
 add_library(kdexoauth2 SHARED ${kdexoauth2sasl_SRCS})
+target_include_directories(kdexoauth2 PRIVATE ${Sasl2_INCLUDE_DIRS})
 set_target_properties(kdexoauth2 PROPERTIES
     C_VISIBILITY_PRESET default
     SOVERSION 3
     VERSION 3.0.0)
 
 install(TARGETS kdexoauth2 DESTINATION ${KDE_INSTALL_LIBDIR}/sasl2)