diff --git a/aom_dsp/x86/jnt_variance_ssse3.c b/aom_dsp/x86/jnt_variance_ssse3.c
index dd798ca..ed5b580 100644
--- a/aom_dsp/x86/jnt_variance_ssse3.c
+++ b/aom_dsp/x86/jnt_variance_ssse3.c
@@ -17,16 +17,7 @@
 #include "config/aom_dsp_rtcd.h"
 
 #include "aom_dsp/x86/synonyms.h"
-
-void aom_var_filter_block2d_bil_first_pass_ssse3(
-    const uint8_t *a, uint16_t *b, unsigned int src_pixels_per_line,
-    unsigned int pixel_step, unsigned int output_height,
-    unsigned int output_width, const uint8_t *filter);
-
-void aom_var_filter_block2d_bil_second_pass_ssse3(
-    const uint16_t *a, uint8_t *b, unsigned int src_pixels_per_line,
-    unsigned int pixel_step, unsigned int output_height,
-    unsigned int output_width, const uint8_t *filter);
+#include "aom_dsp/x86/variance_impl_ssse3.h"
 
 static INLINE void compute_dist_wtd_avg(__m128i *p0, __m128i *p1,
                                         const __m128i *w, const __m128i *r,
diff --git a/aom_dsp/x86/obmc_variance_sse4.c b/aom_dsp/x86/obmc_variance_sse4.c
index 89b050e..164d0c2 100644
--- a/aom_dsp/x86/obmc_variance_sse4.c
+++ b/aom_dsp/x86/obmc_variance_sse4.c
@@ -22,21 +22,12 @@
 #include "aom_dsp/aom_filter.h"
 #include "aom_dsp/x86/obmc_intrinsic_sse4.h"
 #include "aom_dsp/x86/synonyms.h"
+#include "aom_dsp/x86/variance_impl_ssse3.h"
 
 ////////////////////////////////////////////////////////////////////////////////
 // 8 bit
 ////////////////////////////////////////////////////////////////////////////////
 
-void aom_var_filter_block2d_bil_first_pass_ssse3(
-    const uint8_t *a, uint16_t *b, unsigned int src_pixels_per_line,
-    unsigned int pixel_step, unsigned int output_height,
-    unsigned int output_width, const uint8_t *filter);
-
-void aom_var_filter_block2d_bil_second_pass_ssse3(
-    const uint16_t *a, uint8_t *b, unsigned int src_pixels_per_line,
-    unsigned int pixel_step, unsigned int output_height,
-    unsigned int output_width, const uint8_t *filter);
-
 static INLINE void obmc_variance_w8n(const uint8_t *pre, const int pre_stride,
                                      const int32_t *wsrc, const int32_t *mask,
                                      unsigned int *const sse, int *const sum,
diff --git a/aom_dsp/x86/variance_impl_ssse3.c b/aom_dsp/x86/variance_impl_ssse3.c
index 6990021..952cca1 100644
--- a/aom_dsp/x86/variance_impl_ssse3.c
+++ b/aom_dsp/x86/variance_impl_ssse3.c
@@ -15,6 +15,7 @@
 #include "config/aom_dsp_rtcd.h"
 
 #include "aom_dsp/x86/synonyms.h"
+#include "aom_dsp/x86/variance_impl_ssse3.h"
 
 void aom_var_filter_block2d_bil_first_pass_ssse3(
     const uint8_t *a, uint16_t *b, unsigned int src_pixels_per_line,
diff --git a/aom_dsp/x86/variance_impl_ssse3.h b/aom_dsp/x86/variance_impl_ssse3.h
new file mode 100644
index 0000000..725b551
--- /dev/null
+++ b/aom_dsp/x86/variance_impl_ssse3.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2024, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#ifndef AOM_AOM_DSP_X86_VARIANCE_IMPL_SSSE3_H_
+#define AOM_AOM_DSP_X86_VARIANCE_IMPL_SSSE3_H_
+
+#include <stdint.h>
+
+void aom_var_filter_block2d_bil_first_pass_ssse3(
+    const uint8_t *a, uint16_t *b, unsigned int src_pixels_per_line,
+    unsigned int pixel_step, unsigned int output_height,
+    unsigned int output_width, const uint8_t *filter);
+
+void aom_var_filter_block2d_bil_second_pass_ssse3(
+    const uint16_t *a, uint8_t *b, unsigned int src_pixels_per_line,
+    unsigned int pixel_step, unsigned int output_height,
+    unsigned int output_width, const uint8_t *filter);
+
+#endif  // AOM_AOM_DSP_X86_VARIANCE_IMPL_SSSE3_H_