diff --git a/openair1/SCHED_NR_UE/phy_sch_processing_time.h b/openair1/SCHED_NR_UE/phy_sch_processing_time.h
index 896c93b9ee..1861fea9a4 100644
--- a/openair1/SCHED_NR_UE/phy_sch_processing_time.h
+++ b/openair1/SCHED_NR_UE/phy_sch_processing_time.h
@@ -31,6 +31,9 @@
  \warning
 */
 
+#ifndef __PHY_SCH_PROCESSING_TIME_H__
+#define __PHY_SCH_PROCESSING_TIME_H__
+
 /* TS 38.214 Table 5.3-1: PDSCH processing time for PDSCH processing capability 1
 //   corresponding to the PDSCH decoding time N_1 [symbols]
 // where mu corresponds to the one of {mu_PDCCH, mu_PDSCH, mu_UL}
@@ -139,3 +142,5 @@ static const float pusch_d_2_2_timing_capability_2[4][2] = {
 {  2,      9   },
 {  3,      18  },
 };
+
+#endif
diff --git a/openair2/LAYER2/NR_MAC_COMMON/nr_prach_config.h b/openair2/LAYER2/NR_MAC_COMMON/nr_prach_config.h
index 1b6aa0bfb7..5898e2b80c 100644
--- a/openair2/LAYER2/NR_MAC_COMMON/nr_prach_config.h
+++ b/openair2/LAYER2/NR_MAC_COMMON/nr_prach_config.h
@@ -30,6 +30,9 @@
 *       For example the PRACH duration is requested in the O-RAN 7.2 FrontHaul Interface
 */
 
+#ifndef __NR_PRACH_CONFIG_H__
+#define __NR_PRACH_CONFIG_H__
+
 /**
  * @brief Fetch PRACH format (format only) from PRACH configuration tables
  *
@@ -73,3 +76,5 @@ nr_prach_info_t get_nr_prach_occasion_info_from_index(uint8_t index, frequency_r
  * @return PRACH format (format concatenated with format2)
  */
 uint16_t get_nr_prach_format_from_index(uint8_t index, uint32_t pointa, uint8_t unpaired);
+
+#endif