diff --git a/Src/stm32f2xx_hal_rcc.c b/Src/stm32f2xx_hal_rcc.c
index 129626b..2ef4eea 100644
--- a/Src/stm32f2xx_hal_rcc.c
+++ b/Src/stm32f2xx_hal_rcc.c
@@ -668,10 +668,10 @@
         uint32_t pllcfgr = RCC->PLLCFGR;
       
         if((READ_BIT(pllcfgr, RCC_PLLCFGR_PLLSRC) != RCC_OscInitStruct->PLL.PLLSource) ||
-           (READ_BIT(pllcfgr, RCC_PLLCFGR_PLLM) != RCC_OscInitStruct->PLL.PLLM) ||
-           ((READ_BIT(pllcfgr, RCC_PLLCFGR_PLLN) >> RCC_PLLCFGR_PLLN_Pos) != RCC_OscInitStruct->PLL.PLLN) ||
-           (READ_BIT(pllcfgr, RCC_PLLCFGR_PLLP) != RCC_OscInitStruct->PLL.PLLP) ||
-           (READ_BIT(pllcfgr, RCC_PLLCFGR_PLLQ) != RCC_OscInitStruct->PLL.PLLQ))
+           (READ_BIT(pllcfgr, RCC_PLLCFGR_PLLM) != (RCC_OscInitStruct->PLL.PLLM) << RCC_PLLCFGR_PLLM_Pos) ||
+           (READ_BIT(pllcfgr, RCC_PLLCFGR_PLLN) != (RCC_OscInitStruct->PLL.PLLN) << RCC_PLLCFGR_PLLN_Pos) ||
+           (READ_BIT(pllcfgr, RCC_PLLCFGR_PLLP) != (((RCC_OscInitStruct->PLL.PLLP >> 1U) - 1U)) << RCC_PLLCFGR_PLLP_Pos) ||
+           (READ_BIT(pllcfgr, RCC_PLLCFGR_PLLQ) != (RCC_OscInitStruct->PLL.PLLQ << RCC_PLLCFGR_PLLQ_Pos)))
         {
           return HAL_ERROR;
         }