diff --git a/src/Makefile b/src/Makefile
index 058da21..cbe99e7 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -8,11 +8,13 @@ endif
 
 CLANG_EXECUTABLE=clang
 BLST_BUILD_SCRIPT=./build.sh
+FIELD_ELEMENTS_PER_BLOB?=4096
 
 all: c_kzg_4844.o lib
 
+# If you change FIELD_ELEMENTS_PER_BLOB, remember to rm c_kzg_4844.o and make again
 c_kzg_4844.o: c_kzg_4844.c Makefile
-	${CLANG_EXECUTABLE} -Wall -I$(INCLUDE_DIRS) $(CFLAGS) -c $<
+	${CLANG_EXECUTABLE} -Wall -I$(INCLUDE_DIRS) -DFIELD_ELEMENTS_PER_BLOB=$(FIELD_ELEMENTS_PER_BLOB) $(CFLAGS) -c $<
 
 # Will fail with "patch does not apply" if it has already been patched.
 # Safe to ignore.
diff --git a/src/c_kzg_4844.h b/src/c_kzg_4844.h
index 6437925..4230325 100644
--- a/src/c_kzg_4844.h
+++ b/src/c_kzg_4844.h
@@ -36,7 +36,6 @@ extern "C" {
 
 #define BYTES_PER_COMMITMENT 48
 #define BYTES_PER_PROOF 48
-#define FIELD_ELEMENTS_PER_BLOB 4096
 #define BYTES_PER_FIELD_ELEMENT 32
 #define BYTES_PER_BLOB FIELD_ELEMENTS_PER_BLOB * BYTES_PER_FIELD_ELEMENT
 static const uint8_t FIAT_SHAMIR_PROTOCOL_DOMAIN[] = {70, 83, 66, 76, 79, 66, 86, 69, 82, 73, 70, 89, 95, 86, 49, 95}; // "FSBLOBVERIFY_V1_"