diff --git a/crates/zed/src/languages/c/injections.scm b/crates/zed/src/languages/c/injections.scm
new file mode 100644
index 0000000000..845a63bd1b
--- /dev/null
+++ b/crates/zed/src/languages/c/injections.scm
@@ -0,0 +1,7 @@
+(preproc_def
+    value: (preproc_arg) @content
+    (#set! "language" "c"))
+
+(preproc_function_def
+    value: (preproc_arg) @content
+    (#set! "language" "c"))
\ No newline at end of file
diff --git a/crates/zed/src/languages/cpp/injections.scm b/crates/zed/src/languages/cpp/injections.scm
new file mode 100644
index 0000000000..eca372d577
--- /dev/null
+++ b/crates/zed/src/languages/cpp/injections.scm
@@ -0,0 +1,7 @@
+(preproc_def
+    value: (preproc_arg) @content
+    (#set! "language" "c++"))
+
+(preproc_function_def
+    value: (preproc_arg) @content
+    (#set! "language" "c++"))
\ No newline at end of file