diff --git a/dts/arm/yaml/arm,armv6m-nvic.yaml b/dts/arm/yaml/arm,armv6m-nvic.yaml
index 744fca6f786..aac9bc96076 100644
--- a/dts/arm/yaml/arm,armv6m-nvic.yaml
+++ b/dts/arm/yaml/arm,armv6m-nvic.yaml
@@ -30,7 +30,7 @@ properties:
       description: number of interrupts controlled by controller
       generation: define
 
-cell_prefix: IRQ
+cell_string: IRQ
 
 "#cells":
   - irq
diff --git a/dts/arm/yaml/arm_cortex_m4_nvic.yaml b/dts/arm/yaml/arm_cortex_m4_nvic.yaml
index dfad8d9e1dc..8a60638d1d1 100644
--- a/dts/arm/yaml/arm_cortex_m4_nvic.yaml
+++ b/dts/arm/yaml/arm_cortex_m4_nvic.yaml
@@ -30,7 +30,7 @@ properties:
       description: number of interrupts controlled by controller
       generation: define
 
-cell_prefix: IRQ
+cell_string: IRQ
 
 "#cells":
   - irq
diff --git a/scripts/extract_dts_includes.py b/scripts/extract_dts_includes.py
index 08067bc8337..d0f8df6cd2a 100755
--- a/scripts/extract_dts_includes.py
+++ b/scripts/extract_dts_includes.py
@@ -210,7 +210,7 @@ def extract_interrupts(node_address, yaml, y_key, names, defs, def_label):
       cell_parent = irq_parent
 
     cell_yaml = yaml[get_compat(cell_parent)]
-    l_cell_prefix = [yaml[get_compat(irq_parent)].get('cell_prefix', []).upper()]
+    l_cell_prefix = [yaml[get_compat(irq_parent)].get('cell_string', []).upper()]
 
     for i in range(cell_parent['props']['#interrupt-cells']):
       l_cell_name = [cell_yaml['#cells'][i].upper()]