diff --git a/src/asm/main.cpp b/src/asm/main.cpp
index 02ef2950..97586175 100644
--- a/src/asm/main.cpp
+++ b/src/asm/main.cpp
@@ -281,7 +281,6 @@ int main(int argc, char *argv[]) {
 
 		// Unrecognized options
 		default:
-			fprintf(stderr, "FATAL: unknown option '%c'\n", ch);
 			printUsage();
 			exit(1);
 		}
diff --git a/src/fix/main.cpp b/src/fix/main.cpp
index 185ba697..2311f037 100644
--- a/src/fix/main.cpp
+++ b/src/fix/main.cpp
@@ -1372,7 +1372,6 @@ int main(int argc, char *argv[]) {
 			break;
 
 		default:
-			fprintf(stderr, "FATAL: unknown option '%c'\n", ch);
 			printUsage();
 			exit(1);
 		}
diff --git a/src/gfx/main.cpp b/src/gfx/main.cpp
index a3793a8f..c87ae592 100644
--- a/src/gfx/main.cpp
+++ b/src/gfx/main.cpp
@@ -588,7 +588,6 @@ static char *parseArgv(int argc, char *argv[]) {
 			}
 			break;
 		default:
-			fprintf(stderr, "FATAL: unknown option '%c'\n", ch);
 			printUsage();
 			exit(1);
 		}
diff --git a/src/link/main.cpp b/src/link/main.cpp
index 97438a32..eb52ffe5 100644
--- a/src/link/main.cpp
+++ b/src/link/main.cpp
@@ -412,7 +412,6 @@ int main(int argc, char *argv[]) {
 			is32kMode = true;
 			break;
 		default:
-			fprintf(stderr, "FATAL: unknown option '%c'\n", ch);
 			printUsage();
 			exit(1);
 		}