diff --git a/meta/classes-recipe/rust-target-config.bbclass b/meta/classes-recipe/rust-target-config.bbclass
index 926b0630b1..1bd7626bd8 100644
--- a/meta/classes-recipe/rust-target-config.bbclass
+++ b/meta/classes-recipe/rust-target-config.bbclass
@@ -195,7 +195,7 @@ MAX_ATOMIC_WIDTH[mipsel] = "32"
 DATA_LAYOUT[mips64] = "E-m:e-i8:8:32-i16:16:32-i64:64-n32:64-S128"
 TARGET_ENDIAN[mips64] = "big"
 TARGET_POINTER_WIDTH[mips64] = "64"
-TARGET_C_INT_WIDTH[mips64] = "64"
+TARGET_C_INT_WIDTH[mips64] = "32"
 MAX_ATOMIC_WIDTH[mips64] = "64"
 
 ## mips64-n32-unknown-linux-{gnu, musl}
@@ -209,7 +209,7 @@ MAX_ATOMIC_WIDTH[mips64-n32] = "64"
 DATA_LAYOUT[mips64el] = "e-m:e-i8:8:32-i16:16:32-i64:64-n32:64-S128"
 TARGET_ENDIAN[mips64el] = "little"
 TARGET_POINTER_WIDTH[mips64el] = "64"
-TARGET_C_INT_WIDTH[mips64el] = "64"
+TARGET_C_INT_WIDTH[mips64el] = "32"
 MAX_ATOMIC_WIDTH[mips64el] = "64"
 
 ## powerpc-unknown-linux-{gnu, musl}
@@ -223,14 +223,14 @@ MAX_ATOMIC_WIDTH[powerpc] = "32"
 DATA_LAYOUT[powerpc64] = "E-m:e-i64:64-n32:64-S128-v256:256:256-v512:512:512"
 TARGET_ENDIAN[powerpc64] = "big"
 TARGET_POINTER_WIDTH[powerpc64] = "64"
-TARGET_C_INT_WIDTH[powerpc64] = "64"
+TARGET_C_INT_WIDTH[powerpc64] = "32"
 MAX_ATOMIC_WIDTH[powerpc64] = "64"
 
 ## powerpc64le-unknown-linux-{gnu, musl}
 DATA_LAYOUT[powerpc64le] = "e-m:e-i64:64-n32:64-v256:256:256-v512:512:512"
 TARGET_ENDIAN[powerpc64le] = "little"
 TARGET_POINTER_WIDTH[powerpc64le] = "64"
-TARGET_C_INT_WIDTH[powerpc64le] = "64"
+TARGET_C_INT_WIDTH[powerpc64le] = "32"
 MAX_ATOMIC_WIDTH[powerpc64le] = "64"
 
 ## riscv32gc-unknown-linux-{gnu, musl}
@@ -244,7 +244,7 @@ MAX_ATOMIC_WIDTH[riscv32gc] = "32"
 DATA_LAYOUT[riscv64gc] = "e-m:e-p:64:64-i64:64-i128:128-n64-S128"
 TARGET_ENDIAN[riscv64gc] = "little"
 TARGET_POINTER_WIDTH[riscv64gc] = "64"
-TARGET_C_INT_WIDTH[riscv64gc] = "64"
+TARGET_C_INT_WIDTH[riscv64gc] = "32"
 MAX_ATOMIC_WIDTH[riscv64gc] = "64"
 
 ## loongarch64-unknown-linux-{gnu, musl}