diff --git a/src/port/Makefile b/src/port/Makefile
index 4274949dfa4..6e3b7d154ed 100644
--- a/src/port/Makefile
+++ b/src/port/Makefile
@@ -47,7 +47,7 @@ OBJS = \
 	pg_localeconv_r.o \
 	pg_numa.o \
 	pg_popcount_aarch64.o \
-	pg_popcount_avx512.o \
+	pg_popcount_x86.o \
 	pg_strong_random.o \
 	pgcheckdir.o \
 	pgmkdirp.o \
diff --git a/src/port/meson.build b/src/port/meson.build
index 28655142ebe..d7d4e705b89 100644
--- a/src/port/meson.build
+++ b/src/port/meson.build
@@ -10,7 +10,7 @@ pgport_sources = [
   'pg_localeconv_r.c',
   'pg_numa.c',
   'pg_popcount_aarch64.c',
-  'pg_popcount_avx512.c',
+  'pg_popcount_x86.c',
   'pg_strong_random.c',
   'pgcheckdir.c',
   'pgmkdirp.c',
diff --git a/src/port/pg_popcount_avx512.c b/src/port/pg_popcount_x86.c
similarity index 98%
rename from src/port/pg_popcount_avx512.c
rename to src/port/pg_popcount_x86.c
index 407b610bacb..7435492f594 100644
--- a/src/port/pg_popcount_avx512.c
+++ b/src/port/pg_popcount_x86.c
@@ -1,12 +1,12 @@
 /*-------------------------------------------------------------------------
  *
- * pg_popcount_avx512.c
- *	  Holds the AVX-512 pg_popcount() implementation.
+ * pg_popcount_x86.c
+ *	  Holds the x86-64 pg_popcount() implementations.
  *
  * Copyright (c) 2024-2026, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
- *	  src/port/pg_popcount_avx512.c
+ *	  src/port/pg_popcount_x86.c
  *
  *-------------------------------------------------------------------------
  */