diff --git a/kernel/arm64/KERNEL.THUNDERX b/kernel/arm64/KERNEL.THUNDERX
index 4e49ca2a0..11b7a2ca8 100644
--- a/kernel/arm64/KERNEL.THUNDERX
+++ b/kernel/arm64/KERNEL.THUNDERX
@@ -1,6 +1,6 @@
 include $(KERNELDIR)/KERNEL.ARMV8
 
-SDOTKERNEL=dot-thunderx.c
-DDOTKERNEL=ddot-thunderx.c
-DAXPYKERNEL=daxpy-thunderx.c
+SDOTKERNEL=dot_thunderx.c
+DDOTKERNEL=ddot_thunderx.c
+DAXPYKERNEL=daxpy_thunderx.c
 
diff --git a/kernel/arm64/KERNEL.THUNDERX2T99 b/kernel/arm64/KERNEL.THUNDERX2T99
index 03e77879e..66fb6b36f 100644
--- a/kernel/arm64/KERNEL.THUNDERX2T99
+++ b/kernel/arm64/KERNEL.THUNDERX2T99
@@ -8,7 +8,7 @@ DAXPYKERNEL    = daxpy_thunderx2t99.S
 ifndef SMP
 DDOTKERNEL     = ddot_thunderx2t99.S
 else
-DDOTKERNEL     = ddot_thunderx2t99.c
+DDOTKERNEL     = ddot_thunderx2t99_threaded.c
 endif
 
 ifeq ($(DGEMM_UNROLL_M)x$(DGEMM_UNROLL_N), 8x4)
diff --git a/kernel/arm64/daxpy-thunderx.c b/kernel/arm64/daxpy_thunderx.c
similarity index 100%
rename from kernel/arm64/daxpy-thunderx.c
rename to kernel/arm64/daxpy_thunderx.c
diff --git a/kernel/arm64/ddot-thunderx.c b/kernel/arm64/ddot_thunderx.c
similarity index 100%
rename from kernel/arm64/ddot-thunderx.c
rename to kernel/arm64/ddot_thunderx.c
diff --git a/kernel/arm64/ddot_thunderx2t99.c b/kernel/arm64/ddot_thunderx2t99_threaded.c
similarity index 100%
rename from kernel/arm64/ddot_thunderx2t99.c
rename to kernel/arm64/ddot_thunderx2t99_threaded.c
diff --git a/kernel/arm64/dot-thunderx.c b/kernel/arm64/dot_thunderx.c
similarity index 100%
rename from kernel/arm64/dot-thunderx.c
rename to kernel/arm64/dot_thunderx.c