diff --git a/lib/imagery/iscatt_core.c b/lib/imagery/iscatt_core.c
index 0267132a150..1ce5e9ceaeb 100644
--- a/lib/imagery/iscatt_core.c
+++ b/lib/imagery/iscatt_core.c
@@ -456,8 +456,9 @@ static int compute_scatts_from_chunk_row(struct scCats *scatt_conds,
                                          int *fd_cats_rasts)
 {
 
-    int i_rows_pix, i_cat, i_scatt, n_pixs;
+    int i_rows_pix, i_cat, i_scatt;
     int cat_id, scatt_plts_cat_idx, array_idx, max_arr_idx;
+    size_t n_pixs;
     char *b_1_null_row, *b_2_null_row;
     struct rast_row b_1_rast_row, b_2_rast_row;
     CELL *cat_rast_row;
@@ -522,7 +523,7 @@ static int compute_scatts_from_chunk_row(struct scCats *scatt_conds,
                         "Unable to read from category raster condition file."));
                     return -1;
                 }
-                if (n_pixs != (row_size) / (int)sizeof(unsigned char)) {
+                if (n_pixs != ((unsigned)row_size / sizeof(unsigned char))) {
                     G_free(rast_pixs);
                     G_free(belongs_pix);
                     G_warning(
@@ -721,7 +722,7 @@ int I_compute_scatts(struct Cell_head *region, struct scCats *scatt_conds,
     for (i_cat = 0; i_cat < scatts->n_a_cats; i_cat++)
         fd_cats_rasts[i_cat] = -1;
 
-    G_zero(b_needed_bands, (size_t)n_bands * sizeof(int));
+    G_zero(b_needed_bands, n_bands * (unsigned)sizeof(int));
 
     get_needed_bands(scatt_conds, &b_needed_bands[0]);
     get_needed_bands(scatts, &b_needed_bands[0]);
diff --git a/lib/imagery/list_gp.c b/lib/imagery/list_gp.c
index b94a0092bcf..596a3b5f0b1 100644
--- a/lib/imagery/list_gp.c
+++ b/lib/imagery/list_gp.c
@@ -35,7 +35,7 @@ int I_list_group(const char *group, const struct Ref *ref, FILE *fd)
     max = 0;
     for (i = 0; i < ref->nfiles; i++) {
         I__list_group_name_fit(buf, ref->file[i].name, ref->file[i].mapset);
-        len = strlen(buf) + 4;
+        len = (int)strlen(buf) + 4;
         if (len > max)
             max = len;
     }
diff --git a/lib/imagery/list_subgp.c b/lib/imagery/list_subgp.c
index 0b630dcc466..6aaa772d8c2 100644
--- a/lib/imagery/list_subgp.c
+++ b/lib/imagery/list_subgp.c
@@ -90,7 +90,7 @@ int I_list_subgroup(const char *group, const char *subgroup,
     max = 0;
     for (i = 0; i < ref->nfiles; i++) {
         I__list_group_name_fit(buf, ref->file[i].name, ref->file[i].mapset);
-        len = strlen(buf) + 4;
+        len = (int)strlen(buf) + 4;
         if (len > max)
             max = len;
     }
diff --git a/lib/imagery/loc_info.c b/lib/imagery/loc_info.c
index c0cee9422a5..ef5c45ab7f3 100644
--- a/lib/imagery/loc_info.c
+++ b/lib/imagery/loc_info.c
@@ -9,15 +9,15 @@ char *I_location_info(const char *middle)
     char left[80];
     char right[80];
     char *buf;
-    int len, buf_len;
+    size_t len, buf_len;
 
     snprintf(left, 80, "LOCATION: %s", G_location());
     snprintf(right, 80, "MAPSET: %s", G_mapset());
     len = 79 - strlen(left) - strlen(middle) - strlen(right);
     buf_len = len + strlen(left) + strlen(middle) + strlen(right);
     buf = (char *)G_calloc(buf_len, sizeof(char));
-    snprintf(buf, buf_len, "%s%*s%s%*s%s", left, len / 2, "", middle, len / 2,
-             "", right);
+    snprintf(buf, buf_len, "%s%*s%s%*s%s", left, (int)(len / 2), "", middle,
+             (int)(len / 2), "", right);
 
     return buf;
 }
diff --git a/lib/imagery/manage_signatures.c b/lib/imagery/manage_signatures.c
index 13cad69bb7f..5bad71fc924 100644
--- a/lib/imagery/manage_signatures.c
+++ b/lib/imagery/manage_signatures.c
@@ -294,7 +294,7 @@ static int list_by_type(I_SIGFILE_TYPE type, const char *mapset, int base,
     }
 
     /* Make items fully qualified names */
-    int mapset_len = strlen(mapset);
+    size_t mapset_len = strlen(mapset);
 
     *out_list = (char **)G_realloc(*out_list, (base + count) * sizeof(char *));
     for (int i = 0; i < count; i++) {
diff --git a/lib/imagery/sig.c b/lib/imagery/sig.c
index 31009016853..2c9579cf348 100644
--- a/lib/imagery/sig.c
+++ b/lib/imagery/sig.c
@@ -323,7 +323,8 @@ int I_write_signatures(FILE *fd, struct Signature *S)
 char **I_sort_signatures_by_semantic_label(struct Signature *S,
                                            const struct Ref *R)
 {
-    unsigned int total, complete;
+    unsigned int complete;
+    size_t total;
     unsigned int *match1, *match2, mc1, mc2, *new_order;
     double **new_means, ***new_vars;
     char **group_semantic_labels, **mismatches, **new_semantic_labels;
diff --git a/lib/imagery/sigset.c b/lib/imagery/sigset.c
index d4542223f70..2df742a4370 100644
--- a/lib/imagery/sigset.c
+++ b/lib/imagery/sigset.c
@@ -475,7 +475,8 @@ int I_WriteSigSet(FILE *fd, const struct SigSet *S)
  */
 char **I_SortSigSetBySemanticLabel(struct SigSet *S, const struct Ref *R)
 {
-    unsigned int total, complete;
+    unsigned int complete;
+    size_t total;
     unsigned int *match1, *match2, mc1, mc2, *new_order;
     double ***new_means, ****new_vars;
     char **group_semantic_labels, **mismatches, **new_semantic_labels;