diff --git a/interface/trtri.c b/interface/lapack/trtri.c
similarity index 100%
rename from interface/trtri.c
rename to interface/lapack/trtri.c
diff --git a/interface/ztrtri.c b/interface/lapack/ztrtri.c
similarity index 100%
rename from interface/ztrtri.c
rename to interface/lapack/ztrtri.c