diff --git a/backend/genesys.c b/backend/genesys.c
index 45b23e502..3c1339f0b 100644
--- a/backend/genesys.c
+++ b/backend/genesys.c
@@ -2416,7 +2416,6 @@ genesys_dark_shading_calibration (Genesys_Device * dev)
   uint16_t pixels_per_line;
   uint8_t channels;
   uint8_t *calibration_data;
-  int i;
 
   DBG (DBG_proc, "genesys_dark_shading_calibration\n");
   /* end pixel - start pixel */
@@ -2634,7 +2633,6 @@ genesys_white_shading_calibration (Genesys_Device * dev)
   uint16_t pixels_per_line;
   uint8_t *calibration_data;
   uint8_t channels;
-  int i;
 
   DBG (DBG_proc, "genesys_white_shading_calibration (lines = %d)\n",
        dev->model->shading_lines);
diff --git a/backend/genesys_gl841.c b/backend/genesys_gl841.c
index de5c4bd52..76d9cbb64 100644
--- a/backend/genesys_gl841.c
+++ b/backend/genesys_gl841.c
@@ -5674,7 +5674,6 @@ gl841_init_regs_for_warmup (Genesys_Device * dev,
 static SANE_Status
 sanei_gl841_repark_head (Genesys_Device * dev)
 {
-  Genesys_Register_Set local_reg[GENESYS_GL841_MAX_REGS + 1];
   SANE_Status status;
 
   DBG (DBG_proc, "sanei_gl841_repark_head\n");
diff --git a/backend/genesys_gl847.c b/backend/genesys_gl847.c
index cbe8454d3..c15780b76 100644
--- a/backend/genesys_gl847.c
+++ b/backend/genesys_gl847.c
@@ -194,7 +194,7 @@ gl847_bulk_read_data (Genesys_Device * dev, uint8_t addr,
 {
   SANE_Status status;
   size_t size, target, read, done;
-  uint8_t outdata[8], value;
+  uint8_t outdata[8];
 
   DBG (DBG_io, "gl847_bulk_read_data: requesting %lu bytes\n", (u_long) len);