diff --git a/thumbv6m-linux-eabi.json b/thumbv6m-linux-eabi.json
index dd0cb61..ac736ea 100644
--- a/thumbv6m-linux-eabi.json
+++ b/thumbv6m-linux-eabi.json
@@ -23,5 +23,6 @@
     "relocation-model": "static",
     "target-endian": "little",
     "target-pointer-width": "32",
+    "target-c-int-width": "32",
     "vendor": ""
 }
diff --git a/thumbv7em-linux-eabi.json b/thumbv7em-linux-eabi.json
index eef29f5..b6d4a6b 100644
--- a/thumbv7em-linux-eabi.json
+++ b/thumbv7em-linux-eabi.json
@@ -22,5 +22,6 @@
     "relocation-model": "static",
     "target-endian": "little",
     "target-pointer-width": "32",
+    "target-c-int-width": "32",
     "vendor": ""
 }
diff --git a/thumbv7em-linux-eabihf.json b/thumbv7em-linux-eabihf.json
index 5d72ec3..81cfcd4 100644
--- a/thumbv7em-linux-eabihf.json
+++ b/thumbv7em-linux-eabihf.json
@@ -23,5 +23,6 @@
     "relocation-model": "static",
     "target-endian": "little",
     "target-pointer-width": "32",
+    "target-c-int-width": "32",
     "vendor": ""
 }
diff --git a/thumbv7m-linux-eabi.json b/thumbv7m-linux-eabi.json
index 1e8a7f0..abe037c 100644
--- a/thumbv7m-linux-eabi.json
+++ b/thumbv7m-linux-eabi.json
@@ -22,5 +22,6 @@
     "relocation-model": "static",
     "target-endian": "little",
     "target-pointer-width": "32",
+    "target-c-int-width": "32",
     "vendor": ""
 }