diff --git a/source/build/src/lz4.c b/source/build/src/lz4.c
index 143c36e1a..e3f0c03ac 100644
--- a/source/build/src/lz4.c
+++ b/source/build/src/lz4.c
@@ -289,7 +289,7 @@ static const int LZ4_minLength = (MFLIMIT+1);
 /*-************************************
 *  Common functions
 **************************************/
-static unsigned LZ4_NbCommonBytes (register reg_t val)
+static unsigned LZ4_NbCommonBytes (reg_t val)
 {
     if (LZ4_isLittleEndian()) {
         if (sizeof(val)==8) {
diff --git a/source/libxmp-lite/src/mix_all.c b/source/libxmp-lite/src/mix_all.c
index 64904a3ec..cd5cda520 100644
--- a/source/libxmp-lite/src/mix_all.c
+++ b/source/libxmp-lite/src/mix_all.c
@@ -147,7 +147,7 @@
 } while (0)
 
 #define VAR_NORM(x) \
-    register int smp_in; \
+    int smp_in; \
     x *sptr = (x *)vi->sptr; \
     unsigned int pos = (unsigned int)vi->pos; \
     int frac = (int)((1 << SMIX_SHIFT) * (vi->pos - (int)vi->pos))