diff --git a/libraries/SD_MMC/src/SD_MMC.cpp b/libraries/SD_MMC/src/SD_MMC.cpp
index 7365e0df01f5fde48db25e85815f9fed0d0f2c8e..83cf9aa0dd18ba33a5256f769f3ed428b971cc33 100644
--- a/libraries/SD_MMC/src/SD_MMC.cpp
+++ b/libraries/SD_MMC/src/SD_MMC.cpp
@@ -72,8 +72,8 @@ bool SDMMCFS::setPins(int clk, int cmd, int d0, int d1, int d2, int d3)
         (d0 == (int)SDMMC_SLOT1_IOMUX_PIN_NUM_D0) &&
         (((d1 == -1) && (d2 == -1) && (d3 == -1)) ||
          ((d1 == (int)SDMMC_SLOT1_IOMUX_PIN_NUM_D1) &&
-         (d1 == (int)SDMMC_SLOT1_IOMUX_PIN_NUM_D2) &&
-         (d1 == (int)SDMMC_SLOT1_IOMUX_PIN_NUM_D3)));
+         (d2 == (int)SDMMC_SLOT1_IOMUX_PIN_NUM_D2) &&
+         (d3 == (int)SDMMC_SLOT1_IOMUX_PIN_NUM_D3)));
     if (!pins_ok) {
         log_e("SDMMCFS: specified pins are not supported by this chip.");
         return false;