diff --git a/openair1/PHY/LTE_ESTIMATION/lte_ul_channel_estimation.c b/openair1/PHY/LTE_ESTIMATION/lte_ul_channel_estimation.c
index 29f46a9d2e344aa8a80874a9cf62531387937b04..1de23f64122c72abf0b4e680a748c7305a814ad2 100644
--- a/openair1/PHY/LTE_ESTIMATION/lte_ul_channel_estimation.c
+++ b/openair1/PHY/LTE_ESTIMATION/lte_ul_channel_estimation.c
@@ -41,8 +41,8 @@ static int16_t temp_out_ifft_0[2048*4] __attribute__((aligned(16)));
 static int16_t temp_out_ifft_1[2048*4] __attribute__((aligned(16)));
 
 
-static int32_t temp_in_ifft_0[2048*2] __attribute__((aligned(16)));
-static int32_t temp_in_ifft_1[2048*2] __attribute__((aligned(16)));
+static int32_t temp_in_ifft_0[2048*2] __attribute__((aligned(32)));
+static int32_t temp_in_ifft_1[2048*2] __attribute__((aligned(32)));
 static int32_t temp_in_fft_0[2048*2] __attribute__((aligned(16)));
 static int32_t temp_in_fft_1[2048*2] __attribute__((aligned(16)));