diff --git a/crypto_kem/firesaber/avx2/polymul/scm_avx.c b/crypto_kem/firesaber/avx2/polymul/scm_avx.c
index 4e4f11f8..48870f51 100644
--- a/crypto_kem/firesaber/avx2/polymul/scm_avx.c
+++ b/crypto_kem/firesaber/avx2/polymul/scm_avx.c
@@ -4,7 +4,7 @@
 
 #include <immintrin.h>
 
-inline __m256i mul_add(__m256i a, __m256i b, __m256i c) { 
+static inline __m256i mul_add(__m256i a, __m256i b, __m256i c) { 
     return _mm256_add_epi16(_mm256_mullo_epi16(a, b), c);
 }
 
diff --git a/crypto_kem/lightsaber/avx2/polymul/scm_avx.c b/crypto_kem/lightsaber/avx2/polymul/scm_avx.c
index 4e4f11f8..48870f51 100644
--- a/crypto_kem/lightsaber/avx2/polymul/scm_avx.c
+++ b/crypto_kem/lightsaber/avx2/polymul/scm_avx.c
@@ -4,7 +4,7 @@
 
 #include <immintrin.h>
 
-inline __m256i mul_add(__m256i a, __m256i b, __m256i c) { 
+static inline __m256i mul_add(__m256i a, __m256i b, __m256i c) { 
     return _mm256_add_epi16(_mm256_mullo_epi16(a, b), c);
 }
 
diff --git a/crypto_kem/saber/avx2/polymul/scm_avx.c b/crypto_kem/saber/avx2/polymul/scm_avx.c
index 4e4f11f8..48870f51 100644
--- a/crypto_kem/saber/avx2/polymul/scm_avx.c
+++ b/crypto_kem/saber/avx2/polymul/scm_avx.c
@@ -4,7 +4,7 @@
 
 #include <immintrin.h>
 
-inline __m256i mul_add(__m256i a, __m256i b, __m256i c) { 
+static inline __m256i mul_add(__m256i a, __m256i b, __m256i c) { 
     return _mm256_add_epi16(_mm256_mullo_epi16(a, b), c);
 }