diff --git a/CMakeLists.txt b/CMakeLists.txt
index 31c6d113d5..f0a2af18b7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -242,7 +242,7 @@ set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 # Build faddeeva library
 #===============================================================================
 
-add_library(faddeeva STATIC src/Faddeeva.c)
+add_library(faddeeva STATIC src/faddeeva/Faddeeva.c)
 
 #===============================================================================
 # Build OpenMC executable
diff --git a/src/Faddeeva.c b/src/faddeeva/Faddeeva.c
similarity index 100%
rename from src/Faddeeva.c
rename to src/faddeeva/Faddeeva.c
diff --git a/src/Faddeeva.cc b/src/faddeeva/Faddeeva.cc
similarity index 100%
rename from src/Faddeeva.cc
rename to src/faddeeva/Faddeeva.cc
diff --git a/src/Faddeeva.h b/src/faddeeva/Faddeeva.h
similarity index 100%
rename from src/Faddeeva.h
rename to src/faddeeva/Faddeeva.h