diff --git a/tile.cpp b/tile.cpp
index bcebbe24..31ddee4d 100644
--- a/tile.cpp
+++ b/tile.cpp
@@ -2634,7 +2634,7 @@ long long write_tile(decompressor *geoms, std::atomic<long long> *geompos_in, ch
 					line_detail++;	// to keep it the same when the loop decrements it
 					continue;
 				} else if (mingap < ULONG_MAX && (additional[A_DROP_DENSEST_AS_NEEDED] || additional[A_COALESCE_DENSEST_AS_NEEDED] || additional[A_CLUSTER_DENSEST_AS_NEEDED])) {
-					mingap_fraction = mingap_fraction * adjusted_max_tile_features / adjusted_feature_count * 0.80;
+					mingap_fraction = std::min(1.0, mingap_fraction * adjusted_max_tile_features / adjusted_feature_count * 0.80);
 					unsigned long long m = choose_mingap(gaps, mingap_fraction, mingap);
 					if (m > mingap) {
 						mingap = m;
@@ -2652,7 +2652,7 @@ long long write_tile(decompressor *geoms, std::atomic<long long> *geompos_in, ch
 						exit(EXIT_INCOMPLETE);
 					}
 				} else if (additional[A_DROP_SMALLEST_AS_NEEDED] || additional[A_COALESCE_SMALLEST_AS_NEEDED]) {
-					minextent_fraction = minextent_fraction * adjusted_max_tile_features / adjusted_feature_count * 0.75;
+					minextent_fraction = std::min(1.0, minextent_fraction * adjusted_max_tile_features / adjusted_feature_count * 0.75);
 					long long m = choose_minextent(extents, minextent_fraction, minextent);
 					if (m > minextent) {
 						minextent = m;
@@ -2673,7 +2673,7 @@ long long write_tile(decompressor *geoms, std::atomic<long long> *geompos_in, ch
 					// The 95% is a guess to avoid too many retries
 					// and probably actually varies based on how much duplicated metadata there is
 
-					mindrop_sequence_fraction = mindrop_sequence_fraction * adjusted_max_tile_features / adjusted_feature_count * 0.95;
+					mindrop_sequence_fraction = std::min(1.0, mindrop_sequence_fraction * adjusted_max_tile_features / adjusted_feature_count * 0.95);
 					unsigned long long m = choose_mindrop_sequence(drop_sequences, mindrop_sequence_fraction, mindrop_sequence);
 					if (m > mindrop_sequence) {
 						mindrop_sequence = m;
@@ -2753,7 +2753,7 @@ long long write_tile(decompressor *geoms, std::atomic<long long> *geompos_in, ch
 					}
 					line_detail++;	// to keep it the same when the loop decrements it
 				} else if (mingap < ULONG_MAX && (additional[A_DROP_DENSEST_AS_NEEDED] || additional[A_COALESCE_DENSEST_AS_NEEDED] || additional[A_CLUSTER_DENSEST_AS_NEEDED])) {
-					mingap_fraction = mingap_fraction * adjusted_max_tile_size / adjusted_tile_size * 0.80;
+					mingap_fraction = std::min(1.0, mingap_fraction * adjusted_max_tile_size / adjusted_tile_size * 0.80);
 					unsigned long long m = choose_mingap(gaps, mingap_fraction, mingap);
 					if (m > mingap) {
 						mingap = m;
@@ -2771,7 +2771,7 @@ long long write_tile(decompressor *geoms, std::atomic<long long> *geompos_in, ch
 						exit(EXIT_INCOMPLETE);
 					}
 				} else if (additional[A_DROP_SMALLEST_AS_NEEDED] || additional[A_COALESCE_SMALLEST_AS_NEEDED]) {
-					minextent_fraction = minextent_fraction * adjusted_max_tile_size / adjusted_tile_size * 0.75;
+					minextent_fraction = std::min(1.0, minextent_fraction * adjusted_max_tile_size / adjusted_tile_size * 0.75);
 					long long m = choose_minextent(extents, minextent_fraction, minextent);
 					if (m > minextent) {
 						minextent = m;
@@ -2789,7 +2789,7 @@ long long write_tile(decompressor *geoms, std::atomic<long long> *geompos_in, ch
 						exit(EXIT_INCOMPLETE);
 					}
 				} else if (feature_count > layers.size() && (additional[A_DROP_FRACTION_AS_NEEDED] || additional[A_COALESCE_FRACTION_AS_NEEDED] || prevent[P_DYNAMIC_DROP])) {
-					mindrop_sequence_fraction = mindrop_sequence_fraction * adjusted_max_tile_size / adjusted_tile_size * 0.75;
+					mindrop_sequence_fraction = std::min(1.0, mindrop_sequence_fraction * adjusted_max_tile_size / adjusted_tile_size * 0.75);
 					unsigned long long m = choose_mindrop_sequence(drop_sequences, mindrop_sequence_fraction, mindrop_sequence);
 					if (m > mindrop_sequence) {
 						mindrop_sequence = m;