diff --git a/configure.ac b/configure.ac
index a8c1d2e..f7acf05 100644
--- a/configure.ac
+++ b/configure.ac
@@ -281,7 +281,7 @@
 	AX_CHECK_SIMD
 else
 	AM_CONDITIONAL(HAVE_AVX2, false)
-	AM_CONDITIONAL(HAVE_SSE3, false)
+	AM_CONDITIONAL(HAVE_SSSE3, false)
 	AM_CONDITIONAL(HAVE_SSE4_1, false)
 fi
 
diff --git a/m4/ax_check_simd.m4 b/m4/ax_check_simd.m4
index 8a0ceb7..daca2be 100644
--- a/m4/ax_check_simd.m4
+++ b/m4/ax_check_simd.m4
@@ -19,7 +19,7 @@
 #
 #   And defines:
 #
-#      HAVE_AVX3 / HAVE_SSE3 / HAVE_SSE4.1
+#      HAVE_AVX3 / HAVE_SSSE3 / HAVE_SSE4.1
 #
 # LICENSE
 #
@@ -42,7 +42,7 @@
   AC_REQUIRE([AC_CANONICAL_HOST])
 
   AM_CONDITIONAL(HAVE_AVX2, false)
-  AM_CONDITIONAL(HAVE_SSE3, false)
+  AM_CONDITIONAL(HAVE_SSSE3, false)
   AM_CONDITIONAL(HAVE_SSE4_1, false)
 
   case $host_cpu in
@@ -57,14 +57,14 @@
         AC_MSG_WARN([Your compiler does not support AVX2 instructions])
       fi
 
-      AX_CHECK_COMPILE_FLAG(-msse3, ax_cv_support_sse3_ext=yes, [])
-      if test x"$ax_cv_support_sse3_ext" = x"yes"; then
-        SIMD_FLAGS="$SIMD_FLAGS -msse3"
-        AC_DEFINE(HAVE_SSE3,,
-          [Support SSE3 (Streaming SIMD Extensions 3) instructions])
-        AM_CONDITIONAL(HAVE_SSE3, true)
+      AX_CHECK_COMPILE_FLAG(-mssse3, ax_cv_support_ssse3_ext=yes, [])
+      if test x"$ax_cv_support_ssse3_ext" = x"yes"; then
+        SIMD_FLAGS="$SIMD_FLAGS -mssse3"
+        AC_DEFINE(HAVE_SSSE3,,
+          [Support SSSE3 (Supplemental Streaming SIMD Extensions 3) instructions])
+        AM_CONDITIONAL(HAVE_SSSE3, true)
       else
-        AC_MSG_WARN([Your compiler does not support SSE3 instructions])
+        AC_MSG_WARN([Your compiler does not support SSSE3 instructions])
       fi
 
       AX_CHECK_COMPILE_FLAG(-msse4.1, ax_cv_support_sse41_ext=yes, [])
diff --git a/src/Makefile.am b/src/Makefile.am
index e7f94ce..3d6e6f7 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -23,20 +23,20 @@
 			 macaddr.c stat_item.c stats.c stats_statsd.c prim.c \
 			 conv_acc.c conv_acc_generic.c sercomm.c prbs.c
 
-if HAVE_SSE3
+if HAVE_SSSE3
 libosmocore_la_SOURCES += conv_acc_sse.c
 if HAVE_SSE4_1
-conv_acc_sse.lo : AM_CFLAGS += -msse3 -msse4.1
+conv_acc_sse.lo : AM_CFLAGS += -mssse3 -msse4.1
 else
-conv_acc_sse.lo : AM_CFLAGS += -msse3
+conv_acc_sse.lo : AM_CFLAGS += -mssse3
 endif
 
 if HAVE_AVX2
 libosmocore_la_SOURCES += conv_acc_sse_avx.c
 if HAVE_SSE4_1
-conv_acc_sse_avx.lo : AM_CFLAGS += -msse3 -mavx2 -msse4.1
+conv_acc_sse_avx.lo : AM_CFLAGS += -mssse3 -mavx2 -msse4.1
 else
-conv_acc_sse_avx.lo : AM_CFLAGS += -msse3 -mavx2
+conv_acc_sse_avx.lo : AM_CFLAGS += -mssse3 -mavx2
 endif
 endif
 endif
diff --git a/src/conv_acc.c b/src/conv_acc.c
index 33fe264..c16e436 100644
--- a/src/conv_acc.c
+++ b/src/conv_acc.c
@@ -48,7 +48,7 @@
 static int init_complete = 0;
 
 __attribute__ ((visibility("hidden"))) int avx2_supported = 0;
-__attribute__ ((visibility("hidden"))) int sse3_supported = 0;
+__attribute__ ((visibility("hidden"))) int ssse3_supported = 0;
 __attribute__ ((visibility("hidden"))) int sse41_supported = 0;
 
 /**
@@ -75,12 +75,12 @@
 int16_t *osmo_conv_gen_vdec_malloc(size_t n);
 void osmo_conv_gen_vdec_free(int16_t *ptr);
 
-#if defined(HAVE_SSE3)
+#if defined(HAVE_SSSE3)
 int16_t *osmo_conv_sse_vdec_malloc(size_t n);
 void osmo_conv_sse_vdec_free(int16_t *ptr);
 #endif
 
-#if defined(HAVE_SSE3) && defined(HAVE_AVX2)
+#if defined(HAVE_SSSE3) && defined(HAVE_AVX2)
 int16_t *osmo_conv_sse_avx_vdec_malloc(size_t n);
 void osmo_conv_sse_avx_vdec_free(int16_t *ptr);
 #endif
@@ -99,7 +99,7 @@
 void osmo_conv_gen_metrics_k7_n4(const int8_t *seq, const int16_t *out,
 	int16_t *sums, int16_t *paths, int norm);
 
-#if defined(HAVE_SSE3)
+#if defined(HAVE_SSSE3)
 void osmo_conv_sse_metrics_k5_n2(const int8_t *seq, const int16_t *out,
 	int16_t *sums, int16_t *paths, int norm);
 void osmo_conv_sse_metrics_k5_n3(const int8_t *seq, const int16_t *out,
@@ -114,7 +114,7 @@
 	int16_t *sums, int16_t *paths, int norm);
 #endif
 
-#if defined(HAVE_SSE3) && defined(HAVE_AVX2)
+#if defined(HAVE_SSSE3) && defined(HAVE_AVX2)
 void osmo_conv_sse_avx_metrics_k5_n2(const int8_t *seq, const int16_t *out,
 	int16_t *sums, int16_t *paths, int norm);
 void osmo_conv_sse_avx_metrics_k5_n3(const int8_t *seq, const int16_t *out,
@@ -654,8 +654,8 @@
 		avx2_supported = __builtin_cpu_supports("avx2");
 	#endif
 
-	#ifdef HAVE_SSE3
-		sse3_supported = __builtin_cpu_supports("sse3");
+	#ifdef HAVE_SSSE3
+		ssse3_supported = __builtin_cpu_supports("ssse3");
 	#endif
 
 	#ifdef HAVE_SSE4_1
@@ -667,16 +667,16 @@
  * Usage of curly braces is mandatory,
  * because we use multi-line define.
  */
-#if defined(HAVE_SSE3) && defined(HAVE_AVX2)
-	if (sse3_supported && avx2_supported) {
+#if defined(HAVE_SSSE3) && defined(HAVE_AVX2)
+	if (ssse3_supported && avx2_supported) {
 		INIT_POINTERS(sse_avx);
-	} else if (sse3_supported) {
+	} else if (ssse3_supported) {
 		INIT_POINTERS(sse);
 	} else {
 		INIT_POINTERS(gen);
 	}
-#elif defined(HAVE_SSE3)
-	if (sse3_supported) {
+#elif defined(HAVE_SSSE3)
+	if (ssse3_supported) {
 		INIT_POINTERS(sse);
 	} else {
 		INIT_POINTERS(gen);
diff --git a/src/conv_acc_sse.c b/src/conv_acc_sse.c
index a9679ef..63d8722 100644
--- a/src/conv_acc_sse.c
+++ b/src/conv_acc_sse.c
@@ -1,6 +1,6 @@
 /*! \file conv_acc_sse.c
  * Accelerated Viterbi decoder implementation
- * for architectures with only SSE3 available. */
+ * for architectures with only SSSE3 available. */
 /*
  * Copyright (C) 2013, 2014 Thomas Tsou <tom@tsou.cc>
  *
diff --git a/src/conv_acc_sse_avx.c b/src/conv_acc_sse_avx.c
index 5b6e704..5ac3c16 100644
--- a/src/conv_acc_sse_avx.c
+++ b/src/conv_acc_sse_avx.c
@@ -1,6 +1,6 @@
 /*! \file conv_acc_sse_avx.c
  * Accelerated Viterbi decoder implementation
- * for architectures with both SSE3 and AVX2 support. */
+ * for architectures with both SSSE3 and AVX2 support. */
 /*
  * Copyright (C) 2013, 2014 Thomas Tsou <tom@tsou.cc>
  *