diff --git a/.vscode/settings.json b/.vscode/settings.json
index 151ce0f..4e01b7d 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -3,6 +3,11 @@
         "filters.h": "c",
         "features.h": "c",
         "constants.h": "c",
-        "oscillator.h": "c"
+        "oscillator.h": "c",
+        "simple.h": "c",
+        "stdio.h": "c",
+        "stdlib.h": "c",
+        "error.h": "c",
+        "math.h": "c"
     }
 }
\ No newline at end of file
diff --git a/src/sca_mod.c b/src/sca_mod.c
index 842f5b2..ee94a16 100644
--- a/src/sca_mod.c
+++ b/src/sca_mod.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <pulse/simple.h>
+#include <pulse/error.h>
 #include <stdlib.h>
 #include <math.h>
 #include <stdint.h>
diff --git a/src/ssb_stereo_coder.c b/src/ssb_stereo_coder.c
index 74986a9..2b2c82c 100644
--- a/src/ssb_stereo_coder.c
+++ b/src/ssb_stereo_coder.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <pulse/simple.h>
+#include <pulse/error.h>
 #include <stdlib.h>
 #include <math.h>
 #include <stdint.h>
diff --git a/src/stereo_coder.c b/src/stereo_coder.c
index f6d2311..fffe435 100644
--- a/src/stereo_coder.c
+++ b/src/stereo_coder.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <pulse/simple.h>
+#include <pulse/error.h>
 #include <stdlib.h>
 #include <math.h>
 #include <stdint.h>