diff --git a/examples/i2schar/Kconfig b/examples/i2schar/Kconfig
index 890b3783f..00086d2ca 100644
--- a/examples/i2schar/Kconfig
+++ b/examples/i2schar/Kconfig
@@ -37,7 +37,7 @@ config EXAMPLES_I2SCHAR_TXBUFFERS
 
 config EXAMPLES_I2SCHAR_TXSTACKSIZE
 	int "Transmitter thread stack size"
-	default 1536
+	default DEFAULT_TASK_STACKSIZE
 	---help---
 		This is the stack size to use when starting the transmitter thread.
 
@@ -62,7 +62,7 @@ config EXAMPLES_I2SCHAR_RXBUFFERS
 
 config EXAMPLES_I2SCHAR_RXSTACKSIZE
 	int "Receiver thread stack size"
-	default 1536
+	default DEFAULT_TASK_STACKSIZE
 	---help---
 		This is the stack size to use when starting the receiver thread.
 
diff --git a/netutils/netinit/Kconfig b/netutils/netinit/Kconfig
index e6856a882..4f0e31a05 100644
--- a/netutils/netinit/Kconfig
+++ b/netutils/netinit/Kconfig
@@ -109,7 +109,7 @@ endif # NETINIT_MONITOR
 
 config NETINIT_THREAD_STACKSIZE
 	int "Network initialization thread stack size"
-	default 1568
+	default DEFAULT_TASK_STACKSIZE
 
 config NETINIT_THREAD_PRIORITY
 	int "Network initialization thread priority"
diff --git a/testing/getprime/Kconfig b/testing/getprime/Kconfig
index d59fd80a7..5085ac783 100644
--- a/testing/getprime/Kconfig
+++ b/testing/getprime/Kconfig
@@ -25,6 +25,6 @@ config TESTING_GETPRIME_PRIORITY
 
 config TESTING_GETPRIME_STACKSIZE
 	int "getprime stack size"
-	default 1024
+	default DEFAULT_TASK_STACKSIZE
 
 endif