diff --git a/soc/gd/gd32/gd32a50x/Kconfig.defconfig.series b/soc/gd/gd32/gd32a50x/Kconfig.defconfig.series
index f54d52b13c9..9d07bc634d3 100644
--- a/soc/gd/gd32/gd32a50x/Kconfig.defconfig.series
+++ b/soc/gd/gd32/gd32a50x/Kconfig.defconfig.series
@@ -3,9 +3,6 @@
 
 if SOC_SERIES_GD32A50X
 
-config SOC_SERIES
-	default "gd32a50x"
-
 rsource "Kconfig.defconfig.gd32*"
 
 endif # SOC_SERIES_GD32A50X
diff --git a/soc/gd/gd32/gd32e10x/Kconfig.defconfig.series b/soc/gd/gd32/gd32e10x/Kconfig.defconfig.series
index 2aec533c23c..3cdbfc07643 100644
--- a/soc/gd/gd32/gd32e10x/Kconfig.defconfig.series
+++ b/soc/gd/gd32/gd32e10x/Kconfig.defconfig.series
@@ -3,9 +3,6 @@
 
 if SOC_SERIES_GD32E10X
 
-config SOC_SERIES
-	default "gd32e10x"
-
 rsource "Kconfig.defconfig.gd32*"
 
 endif # SOC_SERIES_GD32E10X
diff --git a/soc/gd/gd32/gd32e50x/Kconfig.defconfig.series b/soc/gd/gd32/gd32e50x/Kconfig.defconfig.series
index 1b9f8b98150..8a17573d8fb 100644
--- a/soc/gd/gd32/gd32e50x/Kconfig.defconfig.series
+++ b/soc/gd/gd32/gd32e50x/Kconfig.defconfig.series
@@ -3,9 +3,6 @@
 
 if SOC_SERIES_GD32E50X
 
-config SOC_SERIES
-	default "gd32e50x"
-
 rsource "Kconfig.defconfig.gd32*"
 
 endif # SOC_SERIES_GD32E50X
diff --git a/soc/gd/gd32/gd32f3x0/Kconfig.defconfig.series b/soc/gd/gd32/gd32f3x0/Kconfig.defconfig.series
index 0bb139d227f..d84b9051515 100644
--- a/soc/gd/gd32/gd32f3x0/Kconfig.defconfig.series
+++ b/soc/gd/gd32/gd32f3x0/Kconfig.defconfig.series
@@ -3,9 +3,6 @@
 
 if SOC_SERIES_GD32F3X0
 
-config SOC_SERIES
-	default "gd32f3x0"
-
 rsource "Kconfig.defconfig.gd32*"
 
 endif # SOC_SERIES_GD32F3X0
diff --git a/soc/gd/gd32/gd32f4xx/Kconfig.defconfig.series b/soc/gd/gd32/gd32f4xx/Kconfig.defconfig.series
index aa626c9523f..fe2356d8d5a 100644
--- a/soc/gd/gd32/gd32f4xx/Kconfig.defconfig.series
+++ b/soc/gd/gd32/gd32f4xx/Kconfig.defconfig.series
@@ -3,9 +3,6 @@
 
 if SOC_SERIES_GD32F4XX
 
-config SOC_SERIES
-	default "gd32f4xx"
-
 rsource "Kconfig.defconfig.gd32*"
 
 endif # SOC_SERIES_GD32F4XX
diff --git a/soc/gd/gd32/gd32l23x/Kconfig.defconfig.series b/soc/gd/gd32/gd32l23x/Kconfig.defconfig.series
index bc8b2aa4cde..31f2afa40b6 100644
--- a/soc/gd/gd32/gd32l23x/Kconfig.defconfig.series
+++ b/soc/gd/gd32/gd32l23x/Kconfig.defconfig.series
@@ -3,9 +3,6 @@
 
 if SOC_SERIES_GD32L23X
 
-config SOC_SERIES
-	default "gd32l23x"
-
 rsource "Kconfig.defconfig.gd32*"
 
 endif # SOC_SERIES_GD32L23X