diff --git a/src/Makefile b/src/Makefile
index 695b0bc..bde9b84 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,5 +1,5 @@
-TESTS = blst_util_test fft_util_test fft_fr_test fft_g1_test
-LIB_SRC = blst_util.c fft_util.c fft_fr.c fft_g1.c
+TESTS = blst_util_test fft_common_test fft_fr_test fft_g1_test
+LIB_SRC = blst_util.c fft_common.c fft_fr.c fft_g1.c
 LIB_OBJ = $(LIB_SRC:.c=.o)
 
 CFLAGS =
diff --git a/src/fft_util.c b/src/fft_common.c
similarity index 98%
rename from src/fft_util.c
rename to src/fft_common.c
index c3961e1..5a06454 100644
--- a/src/fft_util.c
+++ b/src/fft_common.c
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#include "fft_util.h"
+#include "fft_common.h"
 
 bool is_power_of_two(uint64_t n) {
     return (n & (n - 1)) == 0;
diff --git a/src/fft_util.h b/src/fft_common.h
similarity index 100%
rename from src/fft_util.h
rename to src/fft_common.h
diff --git a/src/fft_util_test.c b/src/fft_common_test.c
similarity index 99%
rename from src/fft_util_test.c
rename to src/fft_common_test.c
index ea7776a..df21bbb 100644
--- a/src/fft_util_test.c
+++ b/src/fft_common_test.c
@@ -16,7 +16,7 @@
 
 #include "../inc/acutest.h"
 #include "debug_util.h"
-#include "fft_util.h"
+#include "fft_common.h"
 
 #define NUM_ROOTS 32
 
diff --git a/src/fft_fr.h b/src/fft_fr.h
index 292729f..a1d34f0 100644
--- a/src/fft_fr.h
+++ b/src/fft_fr.h
@@ -15,7 +15,7 @@
  */
 
 #include "c_kzg.h"
-#include "fft_util.h"
+#include "fft_common.h"
 
 void fft_fr_slow(blst_fr *out, blst_fr *in, uint64_t stride, blst_fr *roots, uint64_t roots_stride, uint64_t l);
 void fft_fr_fast(blst_fr *out, blst_fr *in, uint64_t stride, blst_fr *roots, uint64_t roots_stride, uint64_t l);
diff --git a/src/fft_g1.h b/src/fft_g1.h
index 5419305..60ee3c6 100644
--- a/src/fft_g1.h
+++ b/src/fft_g1.h
@@ -15,7 +15,7 @@
  */
 
 #include "c_kzg.h"
-#include "fft_util.h"
+#include "fft_common.h"
 
 void fft_g1_slow(blst_p1 *out, blst_p1 *in, uint64_t stride, blst_fr *roots, uint64_t roots_stride, uint64_t l);
 void fft_g1_fast(blst_p1 *out, blst_p1 *in, uint64_t stride, blst_fr *roots, uint64_t roots_stride, uint64_t l);