diff --git a/library/aes.c b/library/aes.c
index db726fe..7a44a78 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -567,7 +567,7 @@
 
     for( i = 0; i < ( keybits >> 5 ); i++ )
     {
-        MBEDTLS_GET_UINT32_LE( RK[i], key, i << 2 );
+        RK[i] = MBEDTLS_GET_UINT32_LE( key, i << 2 );
     }
 
     switch( ctx->nr )
@@ -850,10 +850,10 @@
         uint32_t Y[4];
     } t;
 
-    MBEDTLS_GET_UINT32_LE( t.X[0], input,  0 ); t.X[0] ^= *RK++;
-    MBEDTLS_GET_UINT32_LE( t.X[1], input,  4 ); t.X[1] ^= *RK++;
-    MBEDTLS_GET_UINT32_LE( t.X[2], input,  8 ); t.X[2] ^= *RK++;
-    MBEDTLS_GET_UINT32_LE( t.X[3], input, 12 ); t.X[3] ^= *RK++;
+    t.X[0] = MBEDTLS_GET_UINT32_LE( input,  0 ); t.X[0] ^= *RK++;
+    t.X[1] = MBEDTLS_GET_UINT32_LE( input,  4 ); t.X[1] ^= *RK++;
+    t.X[2] = MBEDTLS_GET_UINT32_LE( input,  8 ); t.X[2] ^= *RK++;
+    t.X[3] = MBEDTLS_GET_UINT32_LE( input, 12 ); t.X[3] ^= *RK++;
 
     for( i = ( ctx->nr >> 1 ) - 1; i > 0; i-- )
     {
@@ -914,10 +914,10 @@
         uint32_t Y[4];
     } t;
 
-    MBEDTLS_GET_UINT32_LE( t.X[0], input,  0 ); t.X[0] ^= *RK++;
-    MBEDTLS_GET_UINT32_LE( t.X[1], input,  4 ); t.X[1] ^= *RK++;
-    MBEDTLS_GET_UINT32_LE( t.X[2], input,  8 ); t.X[2] ^= *RK++;
-    MBEDTLS_GET_UINT32_LE( t.X[3], input, 12 ); t.X[3] ^= *RK++;
+    t.X[0] = MBEDTLS_GET_UINT32_LE( input,  0 ); t.X[0] ^= *RK++;
+    t.X[1] = MBEDTLS_GET_UINT32_LE( input,  4 ); t.X[1] ^= *RK++;
+    t.X[2] = MBEDTLS_GET_UINT32_LE( input,  8 ); t.X[2] ^= *RK++;
+    t.X[3] = MBEDTLS_GET_UINT32_LE( input, 12 ); t.X[3] ^= *RK++;
 
     for( i = ( ctx->nr >> 1 ) - 1; i > 0; i-- )
     {