diff --git a/src/external/MagProximity/CMakeLists.txt b/src/external/MagProximity/CMakeLists.txt
index 57d37b0d..7aa988ee 100644
--- a/src/external/MagProximity/CMakeLists.txt
+++ b/src/external/MagProximity/CMakeLists.txt
@@ -8,6 +8,7 @@ root_generate_dictionary(
   PMagProximityFitterDict 
   -I${FFTW3_INCLUDE_DIR}
   -I${MUSRFIT_INC}
+  -I${CMAKE_CURRENT_SOURCE_DIR}
   -I${PREFIX_INC}
   PMagProximityFitter.h 
   LINKDEF PMagProximityFitterLinkDef.h
@@ -17,6 +18,7 @@ root_generate_dictionary(
 root_generate_dictionary(
   PMPStartupHandlerDict 
   -I${MUSRFIT_INC}
+  -I${CMAKE_CURRENT_SOURCE_DIR}
   -I${PREFIX_INC}
   PMPStartupHandler.h 
   LINKDEF PMPStartupHandlerLinkDef.h
diff --git a/src/external/Nonlocal/CMakeLists.txt b/src/external/Nonlocal/CMakeLists.txt
index 89786877..10d67ccb 100644
--- a/src/external/Nonlocal/CMakeLists.txt
+++ b/src/external/Nonlocal/CMakeLists.txt
@@ -7,14 +7,22 @@ set(PREFIX_INC ${CMAKE_INSTALL_PREFIX}/include)
 
 root_generate_dictionary(
   PNL_PippardFitterDict 
-  -I${FFTW3_INCLUDE_DIR} -I${MUSRFIT_INC} -I${NONLOCAL_INC} -I${PREFIX_INC} PNL_PippardFitter.h 
+  -I${FFTW3_INCLUDE_DIR} 
+  -I${MUSRFIT_INC} 
+  -I${NONLOCAL_INC} 
+  -I${CMAKE_CURRENT_SOURCE_DIR}
+  -I${PREFIX_INC} 
+  PNL_PippardFitter.h 
   LINKDEF PNL_PippardFitterLinkDef.h
   OPTIONS -inlineInputHeader
   MODULE PNL_PippardFitter
 )
 root_generate_dictionary(
   PNL_StartupHandlerDict 
-  -I${NONLOCAL_INC} -I${PREFIX_INC} PNL_StartupHandler.h 
+  -I${NONLOCAL_INC} 
+  -I${CMAKE_CURRENT_SOURCE_DIR}
+  -I${PREFIX_INC} 
+  PNL_StartupHandler.h 
   LINKDEF PNL_StartupHandlerLinkDef.h
   OPTIONS -inlineInputHeader
   MODULE PNL_StartupHandler