diff --git a/src/external/libFitPofB/classes/CMakeLists.txt b/src/external/libFitPofB/classes/CMakeLists.txt
index c78096cf..12421a6c 100644
--- a/src/external/libFitPofB/classes/CMakeLists.txt
+++ b/src/external/libFitPofB/classes/CMakeLists.txt
@@ -66,6 +66,7 @@ target_include_directories(
   FitPofB BEFORE PRIVATE 
     $<BUILD_INTERFACE:${FFTW3_INCLUDE_DIR}> 
     $<BUILD_INTERFACE:${MUSRFIT_INC}>
+    $<BUILD_INTERFACE:${CMAKE_SOURCE_DIR}/src/external/TLemRunHeader>
     $<BUILD_INTERFACE:${BMW_TOOLS_INC}>
     $<BUILD_INTERFACE:${POFB_INC}>
     $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>