diff --git a/pkgs/servers/osmocom/osmo-bsc/default.nix b/pkgs/servers/osmocom/osmo-bsc/default.nix
index 1f9a6cabbf18..1df6e7dd4c3b 100644
--- a/pkgs/servers/osmocom/osmo-bsc/default.nix
+++ b/pkgs/servers/osmocom/osmo-bsc/default.nix
@@ -51,5 +51,6 @@ stdenv.mkDerivation rec {
     license = lib.licenses.agpl3Plus;
     maintainers = with lib.maintainers; [ janik ];
     platforms = lib.platforms.linux;
+    mainProgram = "osmo-bsc";
   };
 }
diff --git a/pkgs/servers/osmocom/osmo-ggsn/default.nix b/pkgs/servers/osmocom/osmo-ggsn/default.nix
index ce902e29c256..51615fdb1b3c 100644
--- a/pkgs/servers/osmocom/osmo-ggsn/default.nix
+++ b/pkgs/servers/osmocom/osmo-ggsn/default.nix
@@ -43,5 +43,6 @@ stdenv.mkDerivation rec {
     license = lib.licenses.gpl2Only;
     maintainers = with lib.maintainers; [ janik ];
     platforms = lib.platforms.linux;
+    mainProgram = "osmo-ggsn";
   };
 }
diff --git a/pkgs/servers/osmocom/osmo-hlr/default.nix b/pkgs/servers/osmocom/osmo-hlr/default.nix
index 6dce9cd84d40..112e3c873902 100644
--- a/pkgs/servers/osmocom/osmo-hlr/default.nix
+++ b/pkgs/servers/osmocom/osmo-hlr/default.nix
@@ -47,5 +47,6 @@ stdenv.mkDerivation rec {
     license = lib.licenses.agpl3Plus;
     maintainers = with lib.maintainers; [ janik ];
     platforms = lib.platforms.linux;
+    mainProgram = "osmo-hlr";
   };
 }
diff --git a/pkgs/servers/osmocom/osmo-sgsn/default.nix b/pkgs/servers/osmocom/osmo-sgsn/default.nix
index d74ca535e140..9529c4f50cad 100644
--- a/pkgs/servers/osmocom/osmo-sgsn/default.nix
+++ b/pkgs/servers/osmocom/osmo-sgsn/default.nix
@@ -53,5 +53,6 @@ stdenv.mkDerivation rec {
     license = lib.licenses.agpl3Plus;
     maintainers = with lib.maintainers; [ janik ];
     platforms = lib.platforms.linux;
+    mainProgram = "osmo-sgsn";
   };
 }